框架集成完毕后,需要增加代码程序进行简单的测试。
如果访问成功,说明项目中SpringMVC框架集成成功。
在src/main/java/com/atguigu/crowdfunding/service目录中增加UserService接口。
如果访问成功,说明项目中Spring框架(IOC功能)集成成功。
在UserDao中增加查询语句,实现数据库查询
在src/main/java/com/atguigu/crowdfunding/controller目录中增加UserController
package com.atguigu.atcrowdfunding.controller; import java.util.HashMap; import java.util.Map; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.ResponseBody; @Controller @RequestMapping("/user") public class UserController { @RequestMapping("/index") public String index() { return "user/index"; } @ResponseBody @RequestMapping("/json") public Object json() { Map map = new HashMap(); map.put("username", "张三"); return map; } }将web项目发布到服务器中,启动服务器,浏览器中分别输入路径http://127.0.0.1:8080/应用路径名称/user/index,http://127.0.0.1:8080/应用路径名称/user/json进行测试。
如果访问成功,说明项目中SpringMVC框架集成成功。
在src/main/java/com/atguigu/crowdfunding/service目录中增加UserService接口。
package com.atguigu.atcrowdfunding.service; public interface UserService { }在src/main/java/com/atguigu/crowdfunding/service/impl目录中增加UserServiceImpl实现类。
package com.atguigu.atcrowdfunding.service.impl; import com.atguigu.atcrowdfunding.service.UserService; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Service; @Service public class UserServiceImpl implements UserService { @Autowired private UserDao userDao; }在src/main/java/com/atguigu/crowdfunding/dao目录中增加UserDao接口。
package com.atguigu.atcrowdfunding.dao; public interface UserDao { }修改UserController类,增加对UserService接口的引用。
package com.atguigu.atcrowdfunding.controller; import java.util.HashMap; import java.util.Map; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.ResponseBody; @Controller @RequestMapping("/user") public class UserController { @Autowired private UserService userService; @RequestMapping("/index") public String index() { return "user/index"; } @ResponseBody @RequestMapping("/json") public Object json() { Map map = new HashMap(); map.put("username", "张三"); return map; } }重启服务器,重新通过浏览器中访问路径http://127.0.0.1:8080/应用路径名称/user/index进行测试。
如果访问成功,说明项目中Spring框架(IOC功能)集成成功。
在src/main/java/com/atguigu/corwdfunding/bean目录中增加User实体类。
package com.atguigu.atcrowdfunding.bean; public class User { }在UserService接口中增加方法声明queryById,并在UserServiceImpl类中默认实现
package com.atguigu.atcrowdfunding.service; import com.atguigu.atcrowdfunding.bean.User; public interface UserService { public User queryById(); }
package com.atguigu.atcrowdfunding.service.impl; import com.atguigu.atcrowdfunding.bean.User; import com.atguigu.atcrowdfunding.service.UserService; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Service; @Service public class UserServiceImpl implements UserService { @Autowired private UserDao userDao; public User queryById() { return userDao.queryById(); } }如果访问成功,说明项目中Spring框架(AOP功能)集成成功。
在UserDao中增加查询语句,实现数据库查询
package com.atguigu.atcrowdfunding.dao; import com.atguigu.atcrowdfunding.bean.User; import org.apache.ibatis.annotations.Select; public interface UserDao { @Select("select * from t_user where id = 1") public User queryById(); }如果访问成功,说明项目中Mybatis框架集成成功。