项目登录页面框架
项目登录页面框架
-
- 运行结果如下：
- 整体代码布局：
- 代码如下：
-
- pom.xml:
- spring-mvc.xml:(全局时间转换器)
- web.xml:
- index.jsp:
- User:
- Emp:
- CommonResult:
- LoginController :
- EmpController :
- ForwardContoller :
- login.jsp:
- emp.jsp:
运行结果如下：
整体代码布局：
代码如下：
pom.xml:
4.0.0
org.example
lesson0826_web
1.0-SNAPSHOT
war
lesson0826_web Maven Webapp
http://www.example.com
8
8
4.0.1
2.2
1.2
5.3.14
1.4
3.4.6
1.3.3
8.0.11
1.2.78
javax.servlet
javax.servlet-api
${servlet.version}
provided
javax.servlet.jsp
jsp-api
${jsp.version}
provided
jstl
jstl
${jstl.version}
org.springframework
spring-webmvc
${spring.version}
org.springframework
spring-jdbc
${spring.version}
commons-dbcp
commons-dbcp
${commons-dbcp.version}
org.mybatis
mybatis
${mybatis.version}
org.mybatis
mybatis-spring
${mybatis-spring.version}
com.github.pagehelper
pagehelper
5.1.0
com.github.abel533
mapper
3.0.1
mysql
mysql-connector-java
${mysql-connector-java.version}
com.alibaba
fastjson
${fastjson.version}
org.projectlombok
lombok
1.18.24
com.fasterxml.jackson.core
jackson-databind
2.13.2.2
spring-mvc.xml:(全局时间转换器)
web.xml:
encodingFilter
org.springframework.web.filter.CharacterEncodingFilter
encoding
UTF-8
encodingFilter
/*
DispatcherServlet
org.springframework.web.servlet.DispatcherServlet
contextConfigLocation
classpath:spring-mvc.xml
DispatcherServlet
/
index.jsp:
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
Hello World!
跳转到登陆
User:
package com.aaa.demo.entity;
import lombok.Data;
@Data
public class User {
private Integer userId;
private String userName;
private String password;
}
Emp:
package com.aaa.demo.entity;
import com.fasterxml.jackson.annotation.JsonFormat;
import com.fasterxml.jackson.databind.DatabindException;
import lombok.Data;
import org.springframework.format.annotation.DateTimeFormat;
import java.util.Date;
@Data
public class Emp {
private Integer empId;
private String empName;
private String sex;
private Double tall;
//设置客户端请求时传入的日期格式
@DateTimeFormat(pattern = "yyyy-MM-dd")
//让返回的日期数据按指定日期格式呈现
//@JsonFormat(pattern = "yyyy-MM-dd")
private Date birthday;
}
CommonResult:
package com.aaa.demo.entity;
import lombok.Data;
/**
* @author: hy
* @create: 2022-08-26 09:18:10
*/
@Data
public class CommonResult {
//成功或失败编码:0成功 其他失败
private Integer code;
//提示信息
private String msg;
//总记录数
private Integer count;
//返回的数据
private T data;
public CommonResult(){}
public CommonResult(Integer code,String msg,Integer count,T data){
this.code=code;
this.msg=msg;
this.count=count;
this.data=data;
}
//增删改成功或者其他操作:参数的data是受影响行数
public static CommonResult success(T data){
return new CommonResult(0,"success",0,data);
}
//查询记录成功
public static CommonResult success(Integer count,T data){
return new CommonResult<>(0,"success",count,data);
}
//失败
public static CommonResult fail(T data){
return new CommonResult<>(1,"fail",0,data);
}
}
LoginController :
package com.aaa.demo.controller;
import com.aaa.demo.entity.CommonResult;
import com.aaa.demo.entity.User;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import javax.servlet.http.HttpSession;
/**
* 登陆控制器
*/
@RestController
@RequestMapping("/user")
public class LoginController {
//定义session对象
@Autowired
private HttpSession session;
@RequestMapping("/login")
public CommonResult login(String userName,String password){
if("admin".equals(userName) && "123456".equals(password)){
//模拟从数据库查询回来一个用户对象
User user = new User();
user.setUserId(1001);
user.setUserName(userName);
user.setPassword(password);
//将数据存储到session中
session.setAttribute("user",user);
return CommonResult.success(user);
}
return CommonResult.fail("用户名或密码不正确");
}
@RequestMapping("/logout")
public CommonResult logout(){
//销毁session
session.invalidate();
return CommonResult.success("注销成功");
}
}
EmpController :
package com.aaa.demo.controller;
import com.aaa.demo.entity.CommonResult;
import com.aaa.demo.entity.Emp;
import org.apache.taglibs.standard.lang.support.ExpressionEvaluatorManager;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import java.util.ArrayList;
import java.util.List;
@RestController //只做数据处理，不做视图解析
@RequestMapping("/emp")
public class EmpController {
/**
* 查询所有员工
* @return
*/
@RequestMapping("/list")
public CommonResult list(){
System.out.println("=========查询所有员工==========");
//模拟从mybatis获取到数据
List empList =getEmpList();
return CommonResult.success(100,empList);
}
/**
* 根据编号查询员工
* @param empId
* @return
*/
@RequestMapping("/getById/{empId}")
public CommonResult getById(@PathVariable("empId") Integer empId){
System.out.println("=========根据编号查询员工:=========="+empId);
//模拟根据编号返回一个数据，并没有实际去查询
Emp emp = new Emp();
emp.setEmpId(1001);
emp.setEmpName("张三");
emp.setSex("男");
emp.setBirthday(java.sql.Date.valueOf("2000-01-01"));
emp.setTall(1.7);
return CommonResult.success(emp);
}
/**
* 添加
* @param emp
* @return
*/
@RequestMapping("/add")
public CommonResult add(Emp emp){
System.out.println("============添加员工=============");
System.out.println(emp);
//返回插入成功的提示
return CommonResult.success(1);
}
/**
* 修改
* @param emp
* @return
*/
@RequestMapping("/update")
public CommonResult update(Emp emp){
System.out.println("============修改员工=============");
System.out.println(emp);
return CommonResult.success(1);
}
/**
* 删除
* @param empId
* @return
*/
@RequestMapping("/delete/{empId}")
public CommonResult delete(@PathVariable("empId") Integer empId){
System.out.println("============删除员工=============:"+empId);
return CommonResult.success(1);
}
//模拟从mybatis取回数据
public List getEmpList(){
List empList = new ArrayList<>();
Emp emp = new Emp();
emp.setEmpId(1001);
emp.setEmpName("张三");
emp.setSex("男");
emp.setBirthday(java.sql.Date.valueOf("2000-01-01"));
emp.setTall(1.7);
Emp emp2 = new Emp();
emp2.setEmpId(1002);
emp2.setEmpName("李四");
emp2.setSex("女");
emp2.setBirthday(java.sql.Date.valueOf("2002-01-01"));
emp2.setTall(1.6);
empList.add(emp);
empList.add(emp2);
return empList;
}
}
ForwardContoller :
package com.aaa.demo.controller;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
/**
* 统一进行页面跳转
*/
@Controller //注意此处没有用@RestController，因为返回的结果要进行视图解析
@RequestMapping("/forward")
public class ForwardContoller {
@RequestMapping("/toLogin")
public String toLogin(){
return "login";
}
//跳转到员工管理页面
@RequestMapping("/toEmp")
public String toEmp(){
return "emp";
}
}
login.jsp:
<%--
Created by IntelliJ IDEA.
User: henry
Date: 2022/8/26
Time: 9:33
To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
Title
emp.jsp:
<%--
Created by IntelliJ IDEA.
User: henry
Date: 2022/8/26
Time: 10:29
To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
Title
// A code block
var foo = 'bar';
// A code block
var foo = 'bar';
// A code block
var foo = 'bar';