2.搭建配置最简单的spring mvc 工程-基础版

目标：用最少的东西，搭建可以运行的最最基础的springmvc登陆校验项目！

spring 4

1.首先配置pom.xml引入spring 相关jar， 引用都有注释， 无关的可以暂时不引用。

<project xmlns="http://maven.apache.org/pom/4.0.0" xmlns:xsi="http://www.w3.org/2001/xmlschema-instance"
  xsi:schemalocation="http://maven.apache.org/pom/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  <modelversion>4.0.0</modelversion>
  <groupid>com.gof</groupid>
  <artifactid>gof-web</artifactid>
  <packaging>war</packaging>
  <version>0.0.1-snapshot</version>
  <name>gof-web</name>
  <url>http://maven.apache.org</url>
  <properties>
    <project.build.sourceencoding>utf-8</project.build.sourceencoding>
    <springversion>4.3.0.release</springversion>
    <jacksonversion>2.9.3</jacksonversion>
    <mybatisversion>3.4.4</mybatisversion>
    <mybatisspringversion>1.3.0</mybatisspringversion>
    <c3p0version>0.9.5.2</c3p0version>
    <mysqlversion>5.1.38</mysqlversion>
    <slf4jversion>1.7.21</slf4jversion>
    <log4jversion>1.2.17</log4jversion>
    <jstlversion>1.2</jstlversion>
    <servletapiversion>3.1.0</servletapiversion>
    <junitversion>4.12</junitversion>
  </properties>
  <dependencies>
    <!--junit 测试开始-->
    <dependency>
      <groupid>junit</groupid>
      <artifactid>junit</artifactid>
      <version>${junitversion}</version>
      <scope>test</scope>
    </dependency>
    <!--junit 测试结束-->

    <!--slf4j + log4j日志依赖 开始-->
    <dependency>
      <groupid>org.slf4j</groupid>
      <artifactid>slf4j-api</artifactid>
      <version>${slf4jversion}</version>
    </dependency>
    <dependency>
      <groupid>org.slf4j</groupid>
      <artifactid>slf4j-log4j12</artifactid>
      <version>${slf4jversion}</version>
    </dependency>
    <dependency>
      <groupid>log4j</groupid>
      <artifactid>log4j</artifactid>
      <version>${log4jversion}</version>
    </dependency>
    <!--slf4j + log4j日志依赖 结束-->

    <!--javaee web容器提供 开始-->
    <dependency>
      <groupid>javax.servlet</groupid>
      <artifactid>javax.servlet-api</artifactid>
      <version>${servletapiversion}</version>
      <scope>provided</scope>
    </dependency>
    <!--javaee web容器提供 开始-->

    <!--jsp 常用标签库依赖 开始-->
    <dependency>
      <groupid>javax.servlet</groupid>
      <artifactid>jstl</artifactid>
      <version>${jstlversion}</version>
      <scope>runtime</scope>
    </dependency>
    <!--jsp 常用标签库依赖 结束-->

    <!-- springmvc模块依赖 开始-->
    <dependency>
      <groupid>org.springframework</groupid>
      <artifactid>spring-webmvc</artifactid>
      <version>${springversion}</version>
    </dependency>
    <dependency>
      <groupid>com.fasterxml.jackson.core</groupid>
      <artifactid>jackson-databind</artifactid>
      <version>${jacksonversion}</version>
    </dependency>
    <!-- springmvc模块依赖 结束-->

    <!-- mybatis模块依赖 开始-->
    <dependency>
      <groupid>org.mybatis</groupid>
      <artifactid>mybatis</artifactid>
      <version>${mybatisversion}</version>
    </dependency>
    <dependency>
      <groupid>org.mybatis</groupid>
      <artifactid>mybatis-spring</artifactid>
      <version>${mybatisspringversion}</version>
    </dependency>
    <!-- mybatis模块依赖 结束-->

    <!--c3p0 数据库连接池依赖 开始-->
    <dependency>
      <groupid>com.mchange</groupid>
      <artifactid>c3p0</artifactid>
      <version>${c3p0version}</version>
    </dependency>
    <!--c3p0 数据库连接池依赖 结束-->

    <!--jdbc 驱动依赖 开始 -->
    <dependency>
      <groupid>mysql</groupid>
      <artifactid>mysql-connector-java</artifactid>
      <version>${mysqlversion}</version>
    </dependency>
    <!--jdbc 驱动依赖 结束 -->

    <!--spring常用模块依赖 开始-->
    <dependency>
      <groupid>org.springframework</groupid>
      <artifactid>spring-aop</artifactid>
      <version>${springversion}</version>
    </dependency>
    <dependency>
      <groupid>org.springframework</groupid>
      <artifactid>spring-aspects</artifactid>
      <version>${springversion}</version>
    </dependency>
    <dependency>
      <groupid>org.springframework</groupid>
      <artifactid>spring-beans</artifactid>
      <version>${springversion}</version>
    </dependency>
    <dependency>
      <groupid>org.springframework</groupid>
      <artifactid>spring-context</artifactid>
      <version>${springversion}</version>
    </dependency>
    <dependency>
      <groupid>org.springframework</groupid>
      <artifactid>spring-context-support</artifactid>
      <version>${springversion}</version>
    </dependency>
    <dependency>
      <groupid>org.springframework</groupid>
      <artifactid>spring-core</artifactid>
      <version>${springversion}</version>
    </dependency>
    <dependency>
      <groupid>org.springframework</groupid>
      <artifactid>spring-jdbc</artifactid>
      <version>${springversion}</version>
    </dependency>
    <dependency>
      <groupid>org.springframework</groupid>
      <artifactid>spring-orm</artifactid>
      <version>${springversion}</version>
    </dependency>
    <dependency>
      <groupid>org.springframework</groupid>
      <artifactid>spring-tx</artifactid>
      <version>${springversion}</version>
    </dependency>
    <dependency>
      <groupid>org.springframework</groupid>
      <artifactid>spring-test</artifactid>
      <version>${springversion}</version>
    </dependency>
    <dependency>
      <groupid>org.springframework</groupid>
      <artifactid>spring-web</artifactid>
      <version>${springversion}</version>
    </dependency>
    <!--spring常用模块依赖结束-->
  </dependencies>

</project>

2.配置web.xml， 这里使用servlet3.1, 配置相关的applicationcontext.xml， 这里是监听spring, 以及引用spring-mvc.xml

<?xml version="1.0" encoding="utf-8"?>
<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
         xmlns:xsi="http://www.w3.org/2001/xmlschema-instance"
         xsi:schemalocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"
         version="3.1">
  <!-- *** 初始化spring容器开始 *** -->
  <listener>
    <listener-class>org.springframework.web.context.contextloaderlistener</listener-class>
  </listener>
  <context-param>
    <param-name>contextconfiglocation</param-name>
    <param-value>classpath:applicationcontext.xml</param-value>
  </context-param>
  <!-- === 初始化spring容器结束 === -->

  <!-- *** 初始化springmvc开始 *** -->
  <servlet>
    <servlet-name>springmvc</servlet-name>
    <servlet-class>org.springframework.web.servlet.dispatcherservlet</servlet-class>
    <init-param>
      <param-name>contextconfiglocation</param-name>
      <param-value>classpath:spring-mvc.xml</param-value>
    </init-param>
    <load-on-startup>1</load-on-startup>
  </servlet>
  <servlet-mapping>
    <servlet-name>springmvc</servlet-name>
    <url-pattern>/</url-pattern>
  </servlet-mapping>
  <!-- === 初始化springmvc结束 === -->
</web-app>

3. 配置 applicationcontext.xml, 这里仅配置spring组件扫描，后期其他再继续配置

<?xml version="1.0" encoding="utf-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/xmlschema-instance" xmlns:p="http://www.springframework.org/schema/p"
       xmlns:context="http://www.springframework.org/schema/context"
       xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx"
       xsi:schemalocation="http://www.springframework.org/schema/beans
         http://www.springframework.org/schema/beans/spring-beans.xsd
          http://www.springframework.org/schema/context
         http://www.springframework.org/schema/context/spring-context.xsd
         http://www.springframework.org/schema/aop
         http://www.springframework.org/schema/aop/spring-aop.xsd
         http://www.springframework.org/schema/tx
          http://www.springframework.org/schema/tx/spring-tx.xsd">
    <!-- 注解扫描：扫描@component,@service,@repository等注解,指定com.gof -->
    <context:component-scan base-package="com.gof" />
<!--  <context:annotation-config />仅能够在已经在已经注册过(applicationcontext)的bean上面起作用。-->

</beans>

4.配置spring-mvc.xml, 配置了注解，以及指定扫描的包， 以及指定spring mvc返回的文件目录格式等

<?xml version="1.0" encoding="utf-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/xmlschema-instance"
       xmlns:context="http://www.springframework.org/schema/context"
       xmlns:mvc="http://www.springframework.org/schema/mvc"
       xsi:schemalocation="http://www.springframework.org/schema/beans
         http://www.springframework.org/schema/beans/spring-beans.xsd
          http://www.springframework.org/schema/context
         http://www.springframework.org/schema/context/spring-context.xsd
         http://www.springframework.org/schema/mvc
         http://www.springframework.org/schema/mvc/spring-mvc.xsd">
    
    <!-- spring mvc注解：@controller,@requestmapping等 -->
    <mvc:annotation-driven/>
    
    <!-- 对进入dispatcherservlet的url进行筛查，如果发现是静态资源的请求，就将该请求转由web应用服务器默认的servlet处理，如果不是静态资源的请求，才由dispatcherservlet继续处理。 -->
    <mvc:default-servlet-handler/>
    
    <!-- 指定spring mvc 返回的文件格式后缀，目录， 也可以不指定，就进行移除-->
    <bean class="org.springframework.web.servlet.view.internalresourceviewresolver">
        <property name="viewclass" value="org.springframework.web.servlet.view.jstlview"/>
        <property name="prefix" value="/web-inf/"/>
        <property name="suffix" value=".html"/>
        <property name="contenttype" value="text/html"/>
    </bean>
    
    <!--只扫描@controller注解类,否则影响事务-->
    <context:component-scan base-package="com.gof" use-default-filters="false">
        <context:include-filter type="annotation" expression="org.springframework.stereotype.controller"/>
    </context:component-scan>
   
</beans>

5. 创建user.java 

package com.gof.domain;

import java.io.serializable;

public class user implements serializable{

    private static final long serialversionuid = 1l;
    
    private string userid;
    
    private string username;
    
    private string password;
    
    private string sex;
    
    private int age;

    
    public string getuserid() {
        return userid;
    }

    public void setuserid(string userid) {
        this.userid = userid;
    }

    public string getusername() {
        return username;
    }

    public void setusername(string username) {
        this.username = username;
    }

    public string getpassword() {
        return password;
    }

    public void setpassword(string password) {
        this.password = password;
    }

    public string getsex() {
        return sex;
    }

    public void setsex(string sex) {
        this.sex = sex;
    }

    public int getage() {
        return age;
    }

    public void setage(int age) {
        this.age = age;
    }
    
    
    
}

6.创建接口:iuserservice

package com.gof.service;

import com.gof.domain.user;

public interface iuserservice {
    
    public user getuserbyusername(string username);
    
}

7.创建实现类：userservice， 这里没有使用到数据，所以数据暂时写固定

package com.gof.service;

import java.util.hashmap;
import java.util.map;

import org.springframework.stereotype.component;

import com.gof.domain.user;

@component
public class userservice implements iuserservice{
    /**
     * 取user
     */
    @override
    public user getuserbyusername(string username) {
        map<string, user> usermap = new hashmap<string, user>();
        //假设username唯一
        user usera = new user();
        usera.setuserid("xxafsfdxafdsafds");
        usera.setusername("jihy");
        usera.setpassword("123456");
    
        user userb= new user();
        usera.setuserid("xxafsfdxafdsafds");
        userb.setusername("jihy2");
        userb.setpassword("123456");
        
        usermap.put(usera.getusername(), usera);
        usermap.put(userb.getusername(), userb);
        
        return usermap.get(username);
    }

}

8.控制层：usercontroller.java

package com.gof.controller;

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.requestparam;
import org.springframework.web.bind.annotation.responsebody;

import com.gof.domain.jsonresponse;
import com.gof.domain.user;
import com.gof.service.iuserservice;

@controller
public class logincontroller {
    @autowired
    private iuserservice userservice;
    /**
     * 登陆主页
     * @return
     */
    @requestmapping(value="/loginindex")
    public string loginindex(){
        
        return "loginindex";
    }
    /**
     * 验证登陆请求
     * @param username
     * @param password
     * @return
     */
    @requestmapping(value="/login")
    @responsebody
    public jsonresponse login(@requestparam string username, @requestparam string password){
        jsonresponse response = new jsonresponse();
        response.setstatus("error");
        user user = userservice.getuserbyusername(username);
        if (user == null) {
            return response;
        }
        if (!password.equals(user.getpassword())) {
            return response;
        }
        response.setstatus("success");
        return response;
    }
}

9.返回对象：jsonresponse.java

package com.gof.domain;

import java.io.serializable;

public class jsonresponse implements serializable{
    
    private static final long serialversionuid = 1l;

    private string status;
    
    private object result;

    public string getstatus() {
        return status;
    }

    public void setstatus(string status) {
        this.status = status;
    }

    public object getresult() {
        return result;
    }

    public void setresult(object result) {
        this.result = result;
    }
    
    
}

10.l登陆主页：loginindex.html

<html>
<head>
<script type="text/javascript" src="./static/js/lib/jquery/jquery-1.8.2.js"></script>
</head>
<body>
<h2>hello world!</h2>

<form name="loginform">
    <input type="input" name="username" id="username" value="jihy"/>
    <input type="password" name="password" id="password" value="123456"/>
    <input type="button" name="提交"/>
</form>
</body>
<script type="text/javascript">
    alert($("form").serialize());
    $(function(){
        $.ajax({
            type:"post",
            url: "./login", 
            data: $("form").serialize(),
            success: function(data){
            alert(json.stringify(data));
          }});
    })
</script>
</html>

11.引用了jquery插件：

 

12：完成， 使用上面代码， 可以运行的项目！