基于IntelliJ IDEA开发工具搭建SSM框架并实现页面登录功能详细讲解二

接：

接下来配置类

UserController

package com.chatRotbot.controller;
import com.chatRotbot.model.User;
import com.chatRotbot.service.IUserService;
import org.apache.commons.lang3.StringUtils;
import org.apache.log4j.Logger;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;

import javax.servlet.http.HttpSession;
@Controller
public class UserController {
    private static Logger logger = Logger.getLogger(UserController.class);
    @Autowired
    private IUserService userService;
    @RequestMapping("/gotoLogin")
    public String gotoLogin(){
        return "login";
    }
    @RequestMapping("/login")
    public String login(@RequestParam(value="loginName" ,required=true) String loginName,
                        String password, Model model, HttpSession session){
        logger.info("登陆用户名:"+loginName);
        //用redirect和forward标签返回
        //注意:用这两个标签必须写全路径,不适应视图解析的逻辑视图
        if(StringUtils.isNotEmpty(loginName)&&
                StringUtils.isNotEmpty(password)){
            User user = userService.loginUser(loginName, password);
            if(user!=null){
                logger.info("登陆成功");
                session.setAttribute("user", user);
                return "redirect:/main" ;
            }else{
                model.addAttribute("loginFlag","登陆失败,请输入正确的用户名和密码");
                return "forward:/WEB-INF/pages/login.jsp";
            }
        }else{
            model.addAttribute("loginFlag","登陆失败,请输入正确的用户名和密码");
            return "forward:/WEB-INF/pages/login.jsp";
        }
    }
    @RequestMapping("/main")
    public String main(){
        return "main/main";
    }

}

IUserService

package com.chatRotbot.service;
import com.chatRotbot.model.User;
public interface IUserService {
    /**
     * 登陆验证
     * @param loginName
     * @param password
     * @return
     */
    public User loginUser(String loginName,String password);

}

UserServiceImpl

package com.chatRotbot.service.impl;
import com.chatRotbot.dao.mapper.UserMapper;
import com.chatRotbot.model.User;
import com.chatRotbot.service.IUserService;
import org.springframework.stereotype.Service;
import javax.annotation.Resource;
import java.util.List;
@Service
public class UserServiceImpl implements IUserService {
    @Resource
    private UserMapper userMapper;

    /**
     * 登录
     * @param loginName
     * @param password
     * @return
     */

    public User loginUser(String loginName, String password) {
        User user = new User();
       user.setUserName(loginName);
        List<User> userList = userMapper.getUserList(user);
        if(userList.isEmpty()){
            return null;
        }else{//进行密码比对
            String ecnryptPassword = userList.get(0).getPassword();
            if(ecnryptPassword.equals(password)) {
                return userList.get(0);
            }
            else {
                return null;
            }
        }
    }
}

UserMapper dao文件中的文件编码

import com.chatRotbot.model.User;

import java.util.List;

public interface UserMapper {

    /**
     * 根据条件查询用户列表
     * @param user
     * @return
     */
    List <User> getUserList(User user);
}

UserMapper.xml

<?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">
<!-- 设置为IUserDao接口方法提供sql语句配置 -->
<mapper namespace="com.chatRotbot.dao.mapper.UserMapper">
    <sql id = "all_user_columns">
         id,email,password,username,role,status,regTime,regIp
    </sql>
    <!--将通用的sql查询条件抽取出来,成为sql片段 ,给不同方法应用  -->
    <sql id="query_user_sql_where">
        <if test="userName!=null">
            AND username LIKE '%${userName}%'
        </if>
        <if test="password!=null">
            AND PASSWORD= #{password}
        </if>
    </sql>
    <select id="getUserList" parameterType="user" resultType="user">
        SELECT
        <include refid="all_user_columns"></include>
        FROM user
        <where>
            <include refid="query_user_sql_where"></include>
        </where>
    </select>
</mapper>

User

package com.chatRotbot.model;

 import java.util.Date;

public class User {
    public long getUserId() {
        return userId;
    }
    public void setUserId(int userId) {
        this.userId = userId;
    }
    private int userId;
    private String email;
    private String password;
    private String userName;
    private String role;
    private int status;
    public String getPassword() {
        return password;
    }
    public void setPassword(String password) {
        this.password = password;
    }
    public String getUserName() {
        return userName;
    }
    public void setUserName(String userName) {
        this.userName = userName;
    }
    public String getEmail() {
        return email;
    }
    public void setEmail(String email) {
        this.email = email;
    }
    public String getRole() {
        return role;
    }
    public void setRole(String role) {
        this.role = role;
    }
    public int getStatus() {
        return status;
    }
    public void setStatus(int status) {
        this.status = status;
    }
    public Date getRegTime() {
        return regTime;
    }
    public void setRegTime(Date regTime) {
        this.regTime = regTime;
    }

    public String getRegIp() {
        return regIp;
    }
    public void setRegIp(String regIp) {
        this.regIp = regIp;
    }
    private Date regTime;
    private String regIp;
}

 login.jsp 登录界面

<%@ page language="java" contentType="text/html; charset=UTF-8"
         pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
    <title>登录</title>
    <style type="text/css">
        html,body{height:100%;}
        /*canvas开始*/
        #canvas {position: absolute;z-index: -1;display: block;}
        /*canvas结束*/
        #login {
            width: 400px;
            height: 320px;
            background: #fff;
            position: absolute; /*绝对定位*/
            margin:auto;
            top:0px;
            left:0px;
            right:0px;
            bottom:0px;
            box-shadow: 0px 0px 10px #666;
            border-radius: 4px; /*圆角*/
        }
        .well{background-color: #062A36;}
        h2{font-family:"微软雅黑";font-size:24px;color:#B94846;margin-bottom:28px;}
        #loginForm{color:#fff}
    </style>
</head>
<body style = "border-radius: 10px;background-size:100% 100% ">
<div class="row" id="login" >
    <div class="well col-md-12 center">
        <div class="title" style="padding: 5px;text-align:center;">
            <h2>登录系统</h2>
        </div>
        <div id="messageBoxLogin" class="alert alert-error ${empty loginFlag ? 'hide' :''} ">
            <label id="loginFlag" class="error">${loginFlag}</label>
        </div>
        <form id="loginForm"  action="login" method="post">
            <label class="input-label" for="loginName">登录名</label>
            <input type="text" id="loginName" name="loginName"  value="">
            <label class="input-label" for="password">密码</label>
            <input type="password" id="password" name="password" >
            <input class="btn  btn-primary" type="submit" value="登 录" />&nbsp;&nbsp;
        </form>
    </div>
</div>
</body>
</html>

main.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
         pageEncoding="UTF-8"%>

<!DOCTYPE html>
<html>
<head>项目搭建</head>
<body>
<h1>恭喜您，ssm框架搭建成功</h1>

</body>
</html>

新建完成后配置项目运行环境，点击Run-Edit Configurations...

点击加号新建运行环境，选择Tomcat Server-Local

选中新建好的服务器，右边选择Deployment,点击加号-Atifact...

选择第二项

war和war exploded 这里看一下他们两个的区别：

war模式：将WEB工程以包的形式上传到服务器 ；
war exploded模式：将WEB工程以当前文件夹的位置关系上传到服务器；

（1）war模式这种可以称之为是发布模式，看名字也知道，这是先打成war包，再发布；

（2）war exploded模式是直接把文件夹、jsp页面 、classes等等移到Tomcat 部署文件夹里面，进行加载部署。因此这种方式支持热部署，一般在开发的时候也是用这种方式。

（3）在平时开发的时候，使用热部署的话，应该对Tomcat进行相应的设置，这样的话修改的jsp界面什么的东西才可以及时的显示出来。

然后在右边Application context配置你的项目名

终于配置完了，运行Tomcat我们看一下效果吧。

我们启动以后会自动弹出登录界面，这里登录界面有点难看，勿喷啊。

当我们输入密码错误时出现以下界面

当我们输入正确的密码时，界面跳转到 主界面

现在项目算是告一段落了。

打印日志：

2018/09/13/17:43:04 DEBUG [http-bio-8081-exec-2] org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:861) - DispatcherServlet with name 'springmvc' processing POST request for [/ChatRobot/login]
2018/09/13/17:43:04 DEBUG [http-bio-8081-exec-2] org.springframework.web.servlet.handler.AbstractHandlerMethodMapping.getHandlerInternal(AbstractHandlerMethodMapping.java:319) - Looking up handler method for path /login
2018/09/13/17:43:04 DEBUG [http-bio-8081-exec-2] org.springframework.web.servlet.handler.AbstractHandlerMethodMapping.getHandlerInternal(AbstractHandlerMethodMapping.java:326) - Returning handler method [public java.lang.String com.chatRotbot.controller.UserController.login(java.lang.String,java.lang.String,org.springframework.ui.Model,javax.servlet.http.HttpSession)]
2018/09/13/17:43:04 DEBUG [http-bio-8081-exec-2] org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:250) - Returning cached instance of singleton bean 'userController'
2018/09/13/17:43:04 DEBUG [http-bio-8081-exec-2] org.springframework.web.cors.DefaultCorsProcessor.processRequest(DefaultCorsProcessor.java:72) - Skip CORS processing, request is a same-origin one
2018/09/13/17:43:04 INFO  [http-bio-8081-exec-2] com.chatRotbot.controller.UserController.login(UserController.java:30) - 登陆用户名:chenyaping
2018/09/13/17:43:04 DEBUG [http-bio-8081-exec-2] org.apache.ibatis.logging.commons.JakartaCommonsLoggingImpl.debug(JakartaCommonsLoggingImpl.java:54) - Creating a new SqlSession
2018/09/13/17:43:04 DEBUG [http-bio-8081-exec-2] org.apache.ibatis.logging.commons.JakartaCommonsLoggingImpl.debug(JakartaCommonsLoggingImpl.java:54) - SqlSession [org.apache.ibatis.session.defaults.DefaultSqlSession@167558b0] was not registered for synchronization because synchronization is not active
2018/09/13/17:43:04 DEBUG [http-bio-8081-exec-2] org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:110) - Fetching JDBC Connection from DataSource
2018/09/13/17:43:04 DEBUG [http-bio-8081-exec-2] org.apache.ibatis.logging.commons.JakartaCommonsLoggingImpl.debug(JakartaCommonsLoggingImpl.java:54) - JDBC Connection [com.mysql.jdbc.Connection@5407451a] will not be managed by Spring
2018/09/13/17:43:04 DEBUG [http-bio-8081-exec-2] org.apache.ibatis.logging.commons.JakartaCommonsLoggingImpl.debug(JakartaCommonsLoggingImpl.java:54) - ==>  Preparing: SELECT id,email,password,username,role,status,regTime,regIp FROM user WHERE username LIKE '%chenyaping%'
2018/09/13/17:43:04 DEBUG [http-bio-8081-exec-2] org.apache.ibatis.logging.commons.JakartaCommonsLoggingImpl.debug(JakartaCommonsLoggingImpl.java:54) - ==> Parameters:
2018/09/13/17:43:04 DEBUG [http-bio-8081-exec-2] org.apache.ibatis.logging.commons.JakartaCommonsLoggingImpl.debug(JakartaCommonsLoggingImpl.java:54) - <==      Total: 2
2018/09/13/17:43:04 DEBUG [http-bio-8081-exec-2] org.apache.ibatis.logging.commons.JakartaCommonsLoggingImpl.debug(JakartaCommonsLoggingImpl.java:54) - Closing non transactional SqlSession [org.apache.ibatis.session.defaults.DefaultSqlSession@167558b0]
2018/09/13/17:43:04 DEBUG [http-bio-8081-exec-2] org.springframework.jdbc.datasource.DataSourceUtils.doReleaseConnection(DataSourceUtils.java:327) - Returning JDBC Connection to DataSource
2018/09/13/17:43:04 INFO  [http-bio-8081-exec-2] com.chatRotbot.controller.UserController.login(UserController.java:38) - 登陆成功
2018/09/13/17:43:04 DEBUG [http-bio-8081-exec-2] org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1620) - Invoking afterPropertiesSet() on bean with name 'redirect:/main'
2018/09/13/17:43:04 DEBUG [http-bio-8081-exec-2] org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:250) - Returning cached instance of singleton bean 'org.springframework.transaction.config.internalTransactionAdvisor'
2018/09/13/17:43:04 DEBUG [http-bio-8081-exec-2] org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1241) - Rendering view [org.springframework.web.servlet.view.RedirectView: name 'redirect:/main'; URL [/main]] in DispatcherServlet with name 'springmvc'
2018/09/13/17:43:04 DEBUG [http-bio-8081-exec-2] org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1000) - Successfully completed request
2018/09/13/17:43:04 DEBUG [http-bio-8081-exec-2] org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:861) - DispatcherServlet with name 'springmvc' processing GET request for [/ChatRobot/main]
2018/09/13/17:43:04 DEBUG [http-bio-8081-exec-2] org.springframework.web.servlet.handler.AbstractHandlerMethodMapping.getHandlerInternal(AbstractHandlerMethodMapping.java:319) - Looking up handler method for path /main
2018/09/13/17:43:04 DEBUG [http-bio-8081-exec-2] org.springframework.web.servlet.handler.AbstractHandlerMethodMapping.getHandlerInternal(AbstractHandlerMethodMapping.java:326) - Returning handler method [public java.lang.String com.chatRotbot.controller.UserController.main()]
2018/09/13/17:43:04 DEBUG [http-bio-8081-exec-2] org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:250) - Returning cached instance of singleton bean 'userController'
2018/09/13/17:43:04 DEBUG [http-bio-8081-exec-2] org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:947) - Last-Modified value for [/ChatRobot/main] is: -1
2018/09/13/17:43:04 DEBUG [http-bio-8081-exec-2] org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1620) - Invoking afterPropertiesSet() on bean with name 'main/main'
2018/09/13/17:43:04 DEBUG [http-bio-8081-exec-2] org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:250) - Returning cached instance of singleton bean 'org.springframework.transaction.config.internalTransactionAdvisor'
2018/09/13/17:43:04 DEBUG [http-bio-8081-exec-2] org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1241) - Rendering view [org.springframework.web.servlet.view.JstlView: name 'main/main'; URL [/WEB-INF/pages/main/main.jsp]] in DispatcherServlet with name 'springmvc'
2018/09/13/17:43:04 DEBUG [http-bio-8081-exec-2] org.springframework.web.servlet.view.InternalResourceView.renderMergedOutputModel(InternalResourceView.java:166) - Forwarding to resource [/WEB-INF/pages/main/main.jsp] in InternalResourceView 'main/main'
2018/09/13/17:43:04 DEBUG [http-bio-8081-exec-2] org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1000) - Successfully completed request

总结：

　　我这里只是简单的搭建了一个 ssm框架，实现页面的登录功能，这才是项目开始冰山一角并且还有很多地方的不足，这里在搭建这个登录功能时也遇到了很多的问题，比如刚开始搭建环境时，Maven版本下的最新版本导致

IntelliJ IDEA一直无法读取，最后下载了低一点版本，还遇到mapper文件一直无法读取，最终参考https://blog.csdn.net/u010504064/article/details/47337307，希望这个简单的搭建能给大家一些帮助和启发。