超详细的用IDEA整合SSM框架和profile 配置环境

悠悠 2022-05-11 07:20 101阅读 0赞

SSM作为现在最流行的开发框架，很大的提升了开发效率。一些同学在SSM基础上的整合一些更实用的开发基础框架，被用来作为快速开发的基础框架。本次实践主要是以下3个目标：

1.  从最基础的SSM框架做起，摸索和处理SSM框架整合中可能会遇到的问题
2.  使用IDEA和MAVEN进行整合
3.  通过profile进行环境的配置管理

整合之前，需要对IDEA环境下，maven工程的各种目录有个初步了解，要不然过程中出现各种异常不知如何去找和应对很是头痛，特奉上干货，maven执行命令后对应target目录情况，此外：log.properties 读取时，系统是在项目根目录，不是classpath目录，这点不注意无法处理错误日志，具体见后续贴的配置文件。

![70][]

整篇内容包含如下部分：

![70 1][]

# 第一部分：整合SSM框架 #

## 1.1 创建基础的Maven 工程 ##

![70 2][]

点next 后，输入GroupId，ArtifactId

![70 3][]

一路next

![70 4][]

点 finish后

由于默认生成的，不带java 和resources 目录，因此先在main上右键创建这两个目录，

![70 5][]

然后使用在目录上右键菜单中选择

![70 6][]

这里完成后

![70 7][]

这两个目录色彩有所变化，如上图

当前的pom.xml如下

<?xml version="1.0" encoding="UTF-8"?>
    
    <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
      xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
      <modelVersion>4.0.0</modelVersion>
    
      <groupId>SsmBase</groupId>
      <artifactId>SsmBase</artifactId>
      <version>1.0-SNAPSHOT</version>
      <packaging>war</packaging>
    
      <name>SsmBase Maven Webapp</name>
      
      <url>http://www.example.com</url>
    
      <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <maven.compiler.source>1.7</maven.compiler.source>
        <maven.compiler.target>1.7</maven.compiler.target>
        
        <spring.version>4.1.0.RELEASE</spring.version>
        
        <mybatis.version>3.2.8</mybatis.version>
        
        <slf4j.version>1.7.7</slf4j.version>
        <log4j.version>1.2.17</log4j.version>
      </properties>
    
      <dependencies>
        <dependency>
          <groupId>junit</groupId>
          <artifactId>junit</artifactId>
          <version>4.11</version>
          <scope>test</scope>
        </dependency>
    
        
        <dependency>
          <groupId>org.springframework</groupId>
          <artifactId>spring-core</artifactId>
          <version>${spring.version}</version>
        </dependency>
    
        <dependency>
          <groupId>org.springframework</groupId>
          <artifactId>spring-web</artifactId>
          <version>${spring.version}</version>
        </dependency>
        <dependency>
          <groupId>org.springframework</groupId>
          <artifactId>spring-oxm</artifactId>
          <version>${spring.version}</version>
        </dependency>
        <dependency>
          <groupId>org.springframework</groupId>
          <artifactId>spring-tx</artifactId>
          <version>${spring.version}</version>
        </dependency>
    
        <dependency>
          <groupId>org.springframework</groupId>
          <artifactId>spring-jdbc</artifactId>
          <version>${spring.version}</version>
        </dependency>
    
        <dependency>
          <groupId>org.springframework</groupId>
          <artifactId>spring-webmvc</artifactId>
          <version>${spring.version}</version>
        </dependency>
        <dependency>
          <groupId>org.springframework</groupId>
          <artifactId>spring-aop</artifactId>
          <version>${spring.version}</version>
        </dependency>
    
        <dependency>
          <groupId>org.springframework</groupId>
          <artifactId>spring-context-support</artifactId>
          <version>${spring.version}</version>
        </dependency>
    
        <dependency>
          <groupId>org.springframework</groupId>
          <artifactId>spring-test</artifactId>
          <version>${spring.version}</version>
        </dependency>
        
        <dependency>
          <groupId>org.mybatis</groupId>
          <artifactId>mybatis</artifactId>
          <version>${mybatis.version}</version>
        </dependency>
    
        
        <dependency>
          <groupId>org.mybatis</groupId>
          <artifactId>mybatis-spring</artifactId>
          <version>1.2.4</version>
        </dependency>
    
        
        <dependency>
          <groupId>javax</groupId>
          <artifactId>javaee-api</artifactId>
          <version>7.0</version>
        </dependency>
    
        
        <dependency>
          <groupId>mysql</groupId>
          <artifactId>mysql-connector-java</artifactId>
          <version>5.1.6</version>
        </dependency>
        
        
        
        <dependency>
          <groupId>org.apache.commons</groupId>
          <artifactId>commons-dbcp2</artifactId>
          <version>2.1.1</version>
        </dependency>
    
    
        
        <dependency>
          <groupId>jstl</groupId>
          <artifactId>jstl</artifactId>
          <version>1.2</version>
        </dependency>
        
        
        <dependency>
          <groupId>log4j</groupId>
          <artifactId>log4j</artifactId>
          <version>${log4j.version}</version>
        </dependency>
    
    
        
        <dependency>
          <groupId>com.alibaba</groupId>
          <artifactId>fastjson</artifactId>
          <version>1.1.41</version>
        </dependency>
    
    
        <dependency>
          <groupId>org.slf4j</groupId>
          <artifactId>slf4j-api</artifactId>
          <version>${slf4j.version}</version>
        </dependency>
    
        <dependency>
          <groupId>org.slf4j</groupId>
          <artifactId>slf4j-log4j12</artifactId>
          <version>${slf4j.version}</version>
        </dependency>
        
        
        <dependency>
          <groupId>org.codehaus.jackson</groupId>
          <artifactId>jackson-mapper-asl</artifactId>
          <version>1.9.13</version>
        </dependency>
        
        <dependency>
          <groupId>com.fasterxml.jackson.core</groupId>
          <artifactId>jackson-core</artifactId>
          <version>2.7.0</version>
        </dependency>
        <dependency>
          <groupId>com.fasterxml.jackson.core</groupId>
          <artifactId>jackson-databind</artifactId>
          <version>2.7.0</version>
        </dependency>
    
    
        
        <dependency>
          <groupId>commons-fileupload</groupId>
          <artifactId>commons-fileupload</artifactId>
          <version>1.3.1</version>
        </dependency>
        <dependency>
          <groupId>commons-io</groupId>
          <artifactId>commons-io</artifactId>
          <version>2.4</version>
        </dependency>
        <dependency>
          <groupId>commons-codec</groupId>
          <artifactId>commons-codec</artifactId>
          <version>1.9</version>
        </dependency>
        <dependency>
          <groupId>javax.servlet</groupId>
          <artifactId>javax.servlet-api</artifactId>
          <version>3.1.0</version>
        </dependency>
    
    
      </dependencies>
    
      <build>
        <finalName>SsmBase</finalName>
        <resources>
          
          <resource>
            <directory>src/main/java</directory>
            <includes>
              <include>**/*.xml</include>
            </includes>
          </resource>
          
          
          <resource>
            <directory>src/main/resources</directory>
            <includes>
            <include>**/*.xml</include>
            <include>**/*.properties</include>
            </includes>
          </resource>
         
        </resources>
    
        <pluginManagement>
          <plugins>
            <plugin>
              <artifactId>maven-clean-plugin</artifactId>
              <version>3.0.0</version>
            </plugin>
            
            <plugin>
              <artifactId>maven-resources-plugin</artifactId>
              <version>3.0.2</version>
            </plugin>
            <plugin>
              <artifactId>maven-compiler-plugin</artifactId>
              <version>3.7.0</version>
            </plugin>
            <plugin>
              <artifactId>maven-surefire-plugin</artifactId>
              <version>2.20.1</version>
            </plugin>
            <plugin>
              <artifactId>maven-war-plugin</artifactId>
              <version>3.2.0</version>
            </plugin>
            <plugin>
              <artifactId>maven-install-plugin</artifactId>
              <version>2.5.2</version>
            </plugin>
            <plugin>
              <artifactId>maven-deploy-plugin</artifactId>
              <version>2.8.2</version>
            </plugin>
          </plugins>
        </pluginManagement>
      </build>
    </project>

## 配置SpringMVC ##

**在下一步整合之前，贴一下整合后的目录结构**

![70 8][]

在resources目录下，建立Spring-mvc.xml，里面内容如下：由于spring版本的变化所以很多网上的例子不能拿来直接用，需要进行修改，以下是修改后的例子

<?xml version="1.0" encoding="UTF-8"?>
    <beans xmlns="http://www.springframework.org/schema/beans"
           xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
           xmlns:aop="http://www.springframework.org/schema/aop"
           xmlns:mvc="http://www.springframework.org/schema/mvc"
           xmlns:context="http://www.springframework.org/schema/context"
           xmlns:tx="http://www.springframework.org/schema/tx"
           xsi:schemaLocation="http://www.springframework.org/schema/beans
            http://www.springframework.org/schema/beans/spring-beans-4.1.xsd
            http://www.springframework.org/schema/tx
            http://www.springframework.org/schema/tx/spring-tx-4.1.xsd
            http://www.springframework.org/schema/aop
            http://www.springframework.org/schema/aop/spring-aop-4.1.xsd
            http://www.springframework.org/schema/context
            http://www.springframework.org/schema/context/spring-context-4.1.xsd
            http://www.springframework.org/schema/mvc
            http://www.springframework.org/schema/mvc/spring-mvc.xsd">
    
        
        <mvc:annotation-driven/>
    
        
        <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
            
            <property name="prefix" value="/"/>
            <property name="suffix" value=".jsp"/>
        </bean>
    
        
        <context:component-scan base-package="com.study.controller"/>
        
        <mvc:resources location="/resources/**" mapping="/resources"/>
        
        <mvc:resources mapping="/css/**" location="/css/" cache-period="2592000" />
        <mvc:resources mapping="/js/**" location="/js/" cache-period="31536000" />
        <mvc:resources mapping="/**" location="/" cache-period="31536000" />
        <mvc:resources mapping="/jsp/**" location="/jsp/" cache-period="31536000" />
        
        <mvc:default-servlet-handler />
    
        
        <bean id="mappingJacksonHttpMessageConverter"
              class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter">
            <property name="supportedMediaTypes">
                <list>
                    <value>text/html;charset=UTF-8</value>
                </list>
            </property>
        </bean>
        
        <bean
                class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter">
            <property name="messageConverters">
                <list>
                    <ref bean="mappingJacksonHttpMessageConverter"/> 
                </list>
            </property>
        </bean>
    
        
        <bean id="multipartResolver"
              class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
            
            <property name="defaultEncoding" value="utf-8"/>
            
            <property name="maxUploadSize" value="10485760000"/>
            
            <property name="maxInMemorySize" value="40960"/>
            
            <property name="resolveLazily" value="true"/>
        </bean>
    
        
        <bean
                class="org.springframework.web.servlet.view.ContentNegotiatingViewResolver">
            <property name="viewResolvers">
                <list>
                    <bean
                            class="org.springframework.web.servlet.view.InternalResourceViewResolver">
                        <property name="prefix" value="/WEB-INF/jsp/"></property>
                        <property name="suffix" value=".jsp"></property>
                    </bean>
                </list>
            </property>
            <property name="defaultViews">
                <list>
                    <bean
                            class="org.springframework.web.servlet.view.json.MappingJackson2JsonView">
                    </bean>
                </list>
            </property>
        </bean>
    </beans>

## 配置web.xml， ##

里面含有了spring的配置内容（没有独立的spring.xml 或者application.xml）

<?xml version="1.0" encoding="UTF-8"?>
    <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xmlns="http://java.sun.com/xml/ns/javaee"
             xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
             version="3.0"
             metadata-complete="false">
    
        <display-name>Archetype Created Web Application</display-name>
    
        
        <context-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>classpath*:spring-mybatis.xml</param-value>
        </context-param>
        
        
        <context-param>
            <param-name>log4jConfigLocation</param-name>
            <param-value>WEB-INF/classes/log.properties</param-value>
        </context-param>
    
        
    
        
        <servlet>
            <servlet-name>SsmBase</servlet-name>
            <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
            <init-param>
                <param-name>contextConfigLocation</param-name>
                <param-value>classpath*:spring-mvc.xml</param-value>
            </init-param>
            <load-on-startup>1</load-on-startup>
            <async-supported>true</async-supported>
        </servlet>
        <servlet-mapping>
            <servlet-name>SsmBase</servlet-name>
            
            <url-pattern>/</url-pattern>
        </servlet-mapping>
    
    
        
        <filter>
            
    
            <filter-name>EncodingFilter</filter-name>
            <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
            <async-supported>true</async-supported>
            <init-param>
                <param-name>encoding</param-name>
                <param-value>UTF-8</param-value>
            </init-param>
        </filter>
        <filter-mapping>
            <filter-name>EncodingFilter</filter-name>
            <url-pattern>/*</url-pattern>
        </filter-mapping>
    
    
    
        
        
        <listener>
            <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
        </listener>
        
         <listener>
            <listener-class>org.springframework.web.util.IntrospectorCleanupListener</listener-class>
        </listener>
        <listener>
            <listener-class>org.springframework.web.util.Log4jConfigListener</listener-class>
        </listener>
    
    
    
        
        <session-config>
            <session-timeout>120</session-timeout>
        </session-config>
    
        <welcome-file-list>
            <welcome-file>/index.jsp</welcome-file>
        </welcome-file-list>
    
        
    </web-app>

## 配置spring-mybatis ##

<?xml version="1.0" encoding="UTF-8"?>
    <beans xmlns="http://www.springframework.org/schema/beans"
           xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
           xmlns:aop="http://www.springframework.org/schema/aop"
           xmlns:context="http://www.springframework.org/schema/context"
           xmlns:tx="http://www.springframework.org/schema/tx"
           xmlns:util="http://www.springframework.org/schema/util"
           xsi:schemaLocation="http://www.springframework.org/schema/beans
            http://www.springframework.org/schema/beans/spring-beans-4.1.xsd
            http://www.springframework.org/schema/tx
            http://www.springframework.org/schema/tx/spring-tx-4.1.xsd
            http://www.springframework.org/schema/aop
            http://www.springframework.org/schema/aop/spring-aop-4.1.xsd
            http://www.springframework.org/schema/context
            http://www.springframework.org/schema/context/spring-context-4.1.xsd">
        
        <context:component-scan base-package="com.study.service" />
        <context:component-scan base-package="com.study.mapper"/>
    
         
        
        <bean id="propertyConfigurer"
              class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
            <property name="location" value="classpath*:jdbc.properties" />
        </bean>
    
        <bean id="dataSource" class="org.apache.commons.dbcp2.BasicDataSource"
              destroy-method="close">
            <property name="driverClassName" value="${driver}" />
            <property name="url" value="${url}" />
            <property name="username" value="${username}" />
            <property name="password" value="${password}" />
            
            <property name="initialSize" value="${initialSize}"></property>
            
            <property name="maxTotal" value="${maxActive}"></property>
            
            <property name="maxIdle" value="${maxIdle}"></property>
            
            <property name="minIdle" value="${minIdle}"></property>
            
            <property name="maxWaitMillis" value="${maxWait}"></property>
        </bean>
    
        
        
        <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
            
            <property name="dataSource" ref="dataSource"/>
            
            <property name="typeAliasesPackage" value="com.study.model"/>
            
            <property name="mapperLocations" value="classpath:com/study/mapper/*.xml"/>
        </bean>
    
        
        <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
            
            <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>
            
            <property name="basePackage" value="com.study.mapper"/>
        </bean>
    
        
        <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
            <property name="dataSource" ref="dataSource" />
        </bean>
    
        
        <tx:annotation-driven transaction-manager="transactionManager"/>
    </beans>

## jdbc.properties ##

driver=com.mysql.jdbc.Driver
    url=jdbc:mysql://localhost:3306/devdb?characterEncoding=utf-8
    username=dev
    password=dev123
    #定义初始连接数
    initialSize=0
    #定义最大连接数
    maxActive=20
    #定义最大空闲
    maxIdle=20
    #定义最小空闲
    minIdle=1
    #定义最长等待时间
    maxWait=60000

## log4j.properties\#日 ##

#日志根目录
    log4j.rootLogger=debug,Console,File
    
    #定义日志输出目的地为控制台
    log4j.appender.Console=org.apache.log4j.ConsoleAppender
    log4j.appender.Console.Target=System.out
    #可以灵活地指定日志输出格式，下面一行是指定具体的格式
    log4j.appender.Console.layout=org.apache.log4j.PatternLayout
    log4j.appender.Console.layout.ConversionPattern=[%c] - %m%n
    
    #文件大小到达指定尺寸的时候产生一个新的文件
    log4j.appender.File=org.apache.log4j.RollingFileAppender
    #指定输出目录, 这里指定变量后，不随启动位置变化
    log4j.appender.File.File=${catalina.home}/log/ssm.log
    #定义文件最大大小
    log4j.appender.File.MaxFileSize = 10MB
    # 输出所以日志，如果换成DEBUG表示输出DEBUG以上级别日志
    log4j.appender.File.Threshold = ALL
    log4j.appender.File.layout = org.apache.log4j.PatternLayout
    log4j.appender.File.layout.ConversionPattern =[%p] [%d{yyyy-MM-dd HH\:mm\:ss}][%c]%m%n

这些文件建好后，在src/main/java目录下建立如下的java 包

![70 9][]

controller  ---放置controller

mapper   ----放置model对象操作dao类和映射xml

model    -----放置模型

service   ---- 放接口对象

db   --- 用来存放库表的创建语句

generator  ---用来存在mybatis的从库表生成对象工具

好了，这些建好后，进入下一个步骤

# 第二部分：创建代码 #

## 创建数据库的库表 ##

这里我们在src/db目录下放置我们要创建的数据库表sql，本例中具体如下：

DROP TABLE IF EXISTS `t_user`;
    CREATE TABLE `t_user` (
      `id` int(11) NOT NULL AUTO_INCREMENT,
      `user_name` varchar(40) NOT NULL,
      `password` varchar(255) NOT NULL,
      `role` int(4) NOT NULL,
      PRIMARY KEY (`id`)
    ) ENGINE=InnoDB DEFAULT CHARSET=utf8;
    
    INSERT INTO `t_user` VALUES ('1', '测试', '123456', '21');
    INSERT INTO `t_user` VALUES ('2', 'admin', '1qaz1qaz', '1');

## 用MyBatis-Generator自动创建代码 ##

通过MyBatis生成器自动生成实体类、DAO接口和Mapping映射文件。这样可以省去很多的功夫，将生成的代码copy到项目工程中即可。    在src 下建立目录generator（这步在上面已经做过的可以略过）， 这里放入mybatis generator 需要包和配置文件，见下图，可以去网上自行下载。修改xml文件中关于数据库中实体的内容

![70 10][]

在本例中的xml 按如下配置：

<?xml version="1.0" encoding="UTF-8"?>
    <!DOCTYPE generatorConfiguration PUBLIC "-//mybatis.org//DTD MyBatis Generator Configuration 1.0//EN"
            "http://mybatis.org/dtd/mybatis-generator-config_1_0.dtd">
    <generatorConfiguration>
        
        <classPathEntry location="E:\cwqwork\ideaProjects\MyJava\SsmBase\src\generator\mysql-connector-java-5.0.8.jar"/>
        <context id="DB2Tables" targetRuntime="MyBatis3">
            <commentGenerator>
                <property name="suppressAllComments" value="true"/>
            </commentGenerator>
            
            <jdbcConnection driverClass="com.mysql.jdbc.Driver" connectionURL="jdbc:mysql://localhost:3306/devdb"
                            userId="dev" password="dev123">
            </jdbcConnection>
    
            
            <javaTypeResolver>
                <property name="forceBigDecimals" value="false"/>
            </javaTypeResolver>
    
            
            <javaModelGenerator targetPackage="com.study.model"
                                targetProject="E:\cwqwork\ideaProjects\MyJava\SsmBase\src\main\java">
                
                <property name="constructorBased" value="true"/>
    
                
                <property name="enableSubPackages" value="false"/>
    
                
                <property name="immutable" value="false"/>
    
                
                <property name="trimStrings" value="true"/>
    
            </javaModelGenerator>
    
            
            <sqlMapGenerator targetPackage="com.study.mapper"
                             targetProject="E:\cwqwork\ideaProjects\MyJava\SsmBase\src\main\java">
                <property name="enableSubPackages" value="false"/>
            </sqlMapGenerator>
    
           
            <javaClientGenerator type="XMLMAPPER" targetPackage="com.study.mapper"
                                 targetProject="E:\cwqwork\ideaProjects\MyJava\SsmBase\src\main\java">
    
                <property name="enableSubPackages" value=""/>
              
                <property name="exampleMethodVisibility" value=""/>
                
                <property name="methodNameCalculator" value=""/>
    
                <property name="rootInterface" value=""/>
    
            </javaClientGenerator>
    
    
            
            <table tableName="t_user" domainObjectName="User"
                   enableCountByExample="false"
                   enableUpdateByExample="false"
                   enableDeleteByExample="false"
                   enableSelectByExample="false"
                   selectByExampleQueryId="false">
            </table>
    
        </context>
    </generatorConfiguration>

配置文件中注意一下： targetProject，targetPackage的配置与工程中的目录位置进行对应。

完成后，可以在命令行执行创建命令。IDEA提供了终端窗口，打开窗口后，进入到mybatis-genertor对应的目录，然后手工输入如下指令：

java -jar mybatis-generator-core-1.3.6.jar -configfile generatorConfig.xml –overwrite

![70 11][]

如果xml文件配置正确的话，在src/main/java目录下对应的包中就会生成相应的文件

## 自动生成的model ##

![70 12][]

代码都是自动生成的，没有改动

## 自动生成的mapper ##

![70 13][]

这里有mybatis的xml映射文件，可以就放这里，但是在pom.xml需要注意build节点下的resources如何配置

## 编写service和service实现 ##

接口类UserServiceInf如下：

package com.study.service;
    
    import com.study.model.User;
    public interface UserServiceInf {
        public User getUserById(int userId);
    }

接口实现类UserServiceImpl如下：

package com.study.service;
    
    import javax.annotation.Resource;
    import com.study.mapper.UserMapper;
    import com.study.model.User;
    import org.springframework.stereotype.Service;
    
    @Service("userService")
    public class UserServiceImpl implements UserServiceInf {
        @Resource
        private UserMapper userDao;
    
        public User getUserById(int userId) {
            // TODO Auto-generated method stub
            return this.userDao.selectByPrimaryKey(userId);
        }
    
    }

## 建立UserController ##

package com.study.controller;
    
    import com.study.model.User;
    import com.study.service.UserServiceInf;
    import org.apache.commons.io.FileUtils;
    import org.slf4j.Logger;
    import org.slf4j.LoggerFactory;
    import org.springframework.http.HttpStatus;
    import org.springframework.http.ResponseEntity;
    import org.springframework.stereotype.Controller;
    import org.springframework.ui.Model;
    import org.springframework.web.bind.annotation.*;
    import org.springframework.web.multipart.MultipartFile;
    
    import javax.annotation.Resource;
    import javax.servlet.http.HttpServletRequest;
    import java.io.File;
    import java.io.IOException;
    import java.util.Map;
    
    
    @Controller
    @ResponseBody
    @RequestMapping("/user")
    public class UserController2 {
        private static Logger log=LoggerFactory.getLogger(UserController2.class);
        @Resource
        private UserServiceInf userService;
    
        // /user/{id}
        @RequestMapping(value="/{id}",method=RequestMethod.GET)
        public @ResponseBody User getUserInJson(@PathVariable String id,Map<String, Object> model){
            int userId = Integer.parseInt(id);
            System.out.println("userId:"+userId);
            User user = this.userService.getUserById(userId);
            log.info(user.toString());
            return user;
        }
    
        // /user/{id}
        @RequestMapping(value="/jsontype/{id}",method=RequestMethod.GET)
        @ResponseBody
        public ResponseEntity<User>  getUserInJson2(@PathVariable String id,Map<String, Object> model){
            int userId = Integer.parseInt(id);
            System.out.println("userId:"+userId);
            User user = this.userService.getUserById(userId);
            log.info(user.toString());
            return new ResponseEntity<User>(user,HttpStatus.OK);
        }
    
        //文件上传、
        @RequestMapping(value="/upload")
        public String showUploadPage(){
            return "user_admin/file";
        }
    
        @RequestMapping(value="/doUpload",method=RequestMethod.POST)
        public String doUploadFile(@RequestParam("file")MultipartFile file) throws IOException{
            if (!file.isEmpty()) {
                log.info("Process file:{}",file.getOriginalFilename());
            }
            FileUtils.copyInputStreamToFile(file.getInputStream(), new File("E:\\",System.currentTimeMillis()+file.getOriginalFilename()));
            return "succes";
        }
    }

## 编写Jsp ##

在webapp/WEB-INF/下建立jsp目录，在这个目录下可以存放jsp代码

![70 14][]

在WEB-INF下index.jsp是本应用的欢迎页面，目前只是打印一个简单的hello world

<html>
    <body>
    <h2>Hello World!</h2>
    </body>
    </html>

# 第三部分：调试 #

## 检查环境 ##

在调试之前，首先检查配置情况，包括如下方面：

![70 15][]

检查Settings中关于maven的jdk设置

检查project 或者 module中jdk设置和artifacts设置

![70 16][]

在run菜单下，检查

![70 17][]

在这里面主要是检查tomcat的jdk和部署内容，还有url根设置

![70 18][]

## 运行maven ##

通过maven project面板运行maven命令：

1.  maven clean 是用来将当期编译生产的target目录清除
2.  compile 用来编译代码，生产target目录和classes目录
3.  resources用来将src下的资源和配置文件，存入到target目录
4.  war.exploded 调试代码的时候，用这个方式来打包，会将target目录下生成的内容打包到target下的项目目录下，用来和tomcat一起进行联调
5.  war.war  调试完毕，用来生产发布包

第4步完成后，target项目目录下情况如图：

![70 19][]

红框内的内容会发布到tomcat

## IDEA下运行tomcat ##

上述操作都正常的情况下，运行tomcat进行调测，在IDEA环境里面右上角，如图：

![70 20][]

![70 21][]

# 第四部分：测试 #

## 欢迎页面 ##

Tomcat启动后浏览器打开显示如下内容，说明tomcat启动成功，项目首页index.jsp调用成功

![70 22][]

## 调用url看controller工作 ##

![70 23][]

## 查看日志 ##

检查日志，因为配置了log4j，里面配置的日志目录，所以在日志目录下可以看到日志

![70 24][]

# 第五部分 通过profile 控制环境 #

我们经常面临的是开发、测试、部署环境下配置文件有不同，因此maven提供了profile来管理这些配置文件

## resources配置 ##

以jdbc.properties 为例，数据库在测试、开发、在线系统上配置是不同的，因此建立不同的文件夹和jdbc.properties

三个文件在本例子中以用户名和密码来区别，不同的环境对应不同的账号和密码

![70 25][]

## pom.xml配置profile ##

在build节点前，增加profiles的设置

<profiles>
      <profile>
        <id>dev</id>
        <properties>
          <env>dev</env>
        </properties>
        <activation>
          <activeByDefault>true</activeByDefault>
        </activation>
      </profile>
      <profile>
        <id>test</id>
        <properties>
          <env>test</env>
        </properties>
      </profile>
      <profile>
        <id>online</id>
        <properties>
          <env>online</env>
        </properties>
      </profile>
    </profiles>

默认是dev，且activeByDefault 设置为true。

## pom.xml修改build节点 ##

![70 26][]

## 验证profiles ##

配置完pom.xml后在IDEA环境的maven project 面板多出来一块内容

![70 27][]

我们可以测试一下，先将dev 打勾，执行maven resources命令

![70 28][]

执行完成后，在classes目录下，jdbc 确实是dev环境。Maven resources是将src目录下的资源拷贝到 target/classes目录下，war命令是将这个目录下的内容生成到项目部署目录。

![70 29][]

现在我们在面板上profile中online 打勾，再次执行 maven resources命令

![70 30][]

最后执行打包就可以根据不同的配置文件进行打包。

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