使用Spring boot 快速创建项目

古城微笑少年丶 2022-01-28 00:35 304阅读 0赞

Spring boot 是整合了框架，以快速开发为目的，大大节省了开发效率。

以下是创建项目。利用STS 4.0软件使用时必须安装eclipse 和 sts 4.0 。方可打开sts4.0

创建好的项目然后建立项目结构

![20190522194541677.png][]

建立application.yml文件配置

server:
      port: 8888
    
    
    spring:
      datasource:
        url: jdbc:sqlserver://10.10.10.2:1433;databaseName=scmis000
        username: sc
        password: redone
        dbcp2:
          driver-class-name: com.microsoft.sqlserver.jdbc.SQLServerDriver
          initial-size: 5
          min-idle: 10
          max-wait-millis: 10000

系统生成的spring boot 主类

package com.xukai;
    
    import org.mybatis.spring.annotation.MapperScan;
    import org.springframework.boot.SpringApplication;
    import org.springframework.boot.autoconfigure.SpringBootApplication;
    import org.springframework.boot.autoconfigure.jdbc.DataSourceAutoConfiguration;
    
    
    //mapperscan扫描。这样的话就不用一个个配置了。
    @MapperScan("com.xukai.mapper")
    @SpringBootApplication
    public class XmHelperApplication {
    
    	public static void main(String[] args) {
    		SpringApplication.run(XmHelperApplication.class, args);
    	}
    
    }

用mybatis-generator-core-1.3.7.jar 来逆向生成数据库mapper和po类

直接用注解的形式写代码。方便快捷。

package com.xukai.mapper;
    
    import com.xukai.po.Personnel;
    import java.util.List;
    import org.apache.ibatis.annotations.Select;
    
    public interface PersonnelMapper {
    	 
    	@Select("SELECT * FROM personnel WHERE PersonnelId = #{id}")
        Personnel getPersonnelById(String id);
    
    	@Select("select * from personnel")
        List<Personnel> selectAll();
    
        @Select("select Password from OperPw where PersonId = #{id}")
        String getPWDByID(String id); 
        
        
    }

这是控制器

package com.xukai.controller;
    
    import java.rmi.RemoteException;
    import java.util.HashMap;
    import java.util.Map;
    
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.web.bind.annotation.RequestBody;
    import org.springframework.web.bind.annotation.RequestMapping;
    import org.springframework.web.bind.annotation.RequestMethod;
    import org.springframework.web.bind.annotation.RestController;
    
    import com.fasterxml.jackson.core.JsonProcessingException;
    import com.fasterxml.jackson.databind.ObjectMapper;
    import com.xukai.mapper.PersonnelMapper;
    import com.xukai.po.Personnel;
    
    //这个注解是不返回页面，而是返回json数据
    @RestController
    public class LoginController {
    	
    	@Autowired
    	private PersonnelMapper personnelMapper;
    
    
    	
    	@RequestMapping(value = "login", method = RequestMethod.POST)
    	public String helloWorld(@RequestBody Map<String, String> maps) throws JsonProcessingException, RemoteException {
    		
    		ObjectMapper objectMapper = new ObjectMapper();
    		Map<String, String> map = new HashMap<>();
    		String resultString;
    		String username = maps.get("username");
    		String password = maps.get("password");
    		
    		
    		//查询是否已经关联
    		
    		
    		
    		Personnel personnel = personnelMapper.getPersonnelById(username);
    		if (personnel == null) {
    			map.put("success", "0");
    			map.put("reason", "无此账号!");
    			resultString = objectMapper.writeValueAsString(map);
    		} else {
    			String encryptPWD = personnelMapper.getPWDByID(personnel.getPersonnelid());
    			personnel.setEncryptPWD(encryptPWD);
    			personnel.setPassword(pwd); 
    	
    			//判断密码是否正确
    			if (password.equals(pwd)) {
    				resultString = objectMapper.writeValueAsString(personnel);
    			} else {
    				map.put("success", "0");
    				map.put("reason", "密码不正确!");
    				resultString = objectMapper.writeValueAsString(map);
    			}
    				
    		}
    		
    		
    		return resultString; 
    	}
    }

OK。项目配置完了。快吧？ 而且不用tomcat就可以直接运行。

[20190522194541677.png]: /images/20220128/44ddd5228c3a4c67801ab888d144b54f.png