您的位置：首页 > 编程语言 > Java开发

eclipse工具 maven 整合ssm（四）：写逻辑代码

2018-02-07 17:01 399 查看

eclipse工具 maven 整合ssm（四）：写逻辑代码

1.实体类
package h5.model;

public class Emp {

private int empno;
private String ename;
private String job;

public int getEmpno() {
return empno;
}
public void setEmpno(int empno) {
this.empno = empno;
}
public String getEname() {
return ename;
}
public void setEname(String ename) {
this.ename = ename;
}
public String getJob() {
return job;
}
public void setJob(String job) {
this.job = job;
}

@Override
public String toString() {
return "Emp [empno=" + empno + ", ename=" + ename + ", job=" + job + "]";
}
}

2. controller层
package h5.controller;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;

import h5.model.Emp;
import h5.service.IEmpService;

@Controller
public class EmpController {

@Autowired
@Qualifier("empService")
private IEmpService empService;

@RequestMapping("/getEmpByEmpno")
public String getEmpByEmpno(Model model,Integer empno)
{
//调用service
Emp emp = empService.getEmpByEmpno(empno);

//保存数据
model.addAttribute("emp", emp);

return "/index.jsp";
}

}

3.service层:建service接口和实现类
package h5.service;

import h5.model.Emp;

public interface IEmpService {

public Emp getEmpByEmpno(int empno);

}

package com.h5.service.impl;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.stereotype.Service;

import h5.EmpMapper;
import h5.model.Emp;
import h5.service.IEmpService;

@Service("empService")
public class EmpServiceImpl implements IEmpService {

@Autowired
@Qualifier("empMapper")
private EmpMapper empMapper;

@Override
public Emp getEmpByEmpno(int empno) {

Emp emp = empMapper.getEmpByEmpno(empno);

return emp;
}

}

4.dao层
package h5.dao;

import h5.model.Emp;

public interface EmpMapper {
public Emp getEmpByEmpno(int empno);
}

5.mapper
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="h5.dao.EmpMapper">

   <select id="getEmpByEmpno" parameterType="int" resultType="h5.model.Emp">
       select * from emp where empno = #{empno}
   </select>

</mapper>
6.jsp页面，jsp页面放在webapp下，如下图

<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>
<form action="getEmpByEmpno.action">
雇员编号：<input type="text" name="empno">
<input type="submit" value="查询">
</form>

${emp}
</body>
</html>逻辑代码就写完了

内容来自用户分享和网络整理，不保证内容的准确性，如有侵权内容，可联系管理员处理

标签： maven ssm java

相关文章推荐

新的分享

章节导航