SpringMVC初次尝试

妖狐艹你老母 2023-10-11 19:57 1阅读 0赞

### 1.1、在pom.xml中添加依赖 ###

<dependency>
          <groupId>org.springframework</groupId>
          <artifactId>spring-context</artifactId>
          <version>4.2.6.RELEASE</version>
        </dependency>
        <dependency>
          <groupId>org.springframework</groupId>
          <artifactId>spring-web</artifactId>
          <version>4.2.6.RELEASE</version>
        </dependency>
        <dependency>
          <groupId>org.springframework</groupId>
          <artifactId>spring-webmvc</artifactId>
          <version>4.2.6.RELEASE</version>
        </dependency>

### 1.1、添加Spring的配置文件beans.xml ###

<?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:context="http://www.springframework.org/schema/context"
           xmlns:mvc="http://www.springframework.org/schema/mvc"
           xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd">
    
        
        <mvc:annotation-driven/>
        
        <context:component-scan base-package="demo.controller"/>
    
        
        <bean id="internalResourceViewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
            
            
            <property name="prefix" value="/views/"/>
            
            <property name="suffix" value=".html"/>
        </bean>
    </beans>

### 1.3、在web.xml中配置SpringMVC ###

<!DOCTYPE web-app PUBLIC
     "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
     "http://java.sun.com/dtd/web-app_2_3.dtd" >
    
    <web-app>
      
      <servlet>
        <servlet-name>springMVC</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <init-param>
          
          <param-name>contextConfigLocation</param-name>
          <param-value>classpath:beans.xml</param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>
      </servlet>
      <servlet-mapping>
        <servlet-name>springMVC</servlet-name>
        <url-pattern>/</url-pattern>
      </servlet-mapping>
    </web-app>

### 1.4、在web.xml中配置允许访问静态文件 ###

<servlet-mapping>
        <servlet-name >default</servlet-name >
        <url-pattern >*.js</url-pattern>
      </servlet-mapping >
      <servlet-mapping >
        <servlet-name >default</servlet-name >
        <url-pattern >*.css</url-pattern>
      </servlet-mapping >
      <servlet-mapping >
        <servlet-name >default</servlet-name >
        <url-pattern >*.html</url-pattern>
      </servlet-mapping >
      <servlet-mapping >
        <servlet-name >default</servlet-name >
        <url-pattern >*.gif</url-pattern>
      </servlet-mapping >

### 1.5、在webapp文件夹下添加demo01.html ###

在\\webapp\\views\\文件夹下创建demo01.html文件

<body>
        你好SpringMVC
    </body>

### 1.6、添加Controller ###

package demo.controller;
    
    import org.springframework.stereotype.Controller;
    import org.springframework.web.bind.annotation.RequestMapping;
    
    @Controller
    public class DemoController {
        @RequestMapping("/index")
        public String index1(){
            return "demo01";
        }
    }

### 1.7、浏览器访问测试 ###

在浏览器中访问controller，可以正常跳转到demo01.html

## 二、添加JSON支持 ##

### 2.1、在beans.xml中添加JSON的消息转换器 ###

<mvc:annotation-driven>
            <mvc:message-converters register-defaults="true">
                <bean class="org.springframework.http.converter.StringHttpMessageConverter">
                    <constructor-arg value="UTF-8"/>
                </bean>
                <bean class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter">
                    <property name="objectMapper">
                        <bean class="org.springframework.http.converter.json.Jackson2ObjectMapperFactoryBean">
                            <property name="failOnEmptyBeans" value="false"/>
                        </bean>
                    </property>
                </bean>
            </mvc:message-converters>
        </mvc:annotation-driven>

### 2.2、添加User实体 ###

public class User {
        private int id;
        private String uname;
      	//省略Getter和Setter
    }

### 2.3、在Controller中测试 ###

package demo.controller;
    
    import org.springframework.web.bind.annotation.RequestMapping;
    import org.springframework.web.bind.annotation.RestController;
    
    @RestController
    public class TestController {
    
        @RequestMapping("/test2")
        public User test2(){
            User user = new User(1001, "张三");
            return user;
        }
    }

### 2.4、在浏览器中进行测试 ###

浏览器中访问controller进行测试

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