Intellij IDEA中利用Maven搭建SSM项目

最近想学一下SSM框架，自己动手搭了一个，在这其中碰到了一些问题，总结如下：

1.mapper.xml配置文件没有被编译。

        自己把配置文件放到了java文件夹下，最后发现配置文件并没有被编译，最后发现是编译器的问题，我用的IDE是Intellij，在Intellij中的    java文件夹下的xml文件并不会被编译，需要把xml文件放到resources文件夹下，这个是Intellij的特性，需要注意。

2.数据库连接方面的错误

3..在做springMVC的测试的时候出现页面不跳转的问题，最终这个问题的原因是JDK的版本太低，需要1.8的，自己的是1.7。这个问题自己找了很久，但最终还是解决了。

接下来看程序：

程序结构如下：

代码如下：

applicationContext.xml：

<?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"       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">    <context:component-scan base-package="mapper"/>    <context:component-scan base-package="serviceImp"/>    <!--Spring 通过一个 BeanPostProcessor 对 @Autowired 进行解析，所以要让 @Autowired 起作用必须事先在     Spring 容器中声明 AutowiredAnnotationBeanPostProcessor Bean-->    <bean class="org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor"/>    <!--<context:property-placeholder location="classpath:jdbc.properties"/>-->    <bean id="propertyConfigurer" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">        <property name="locations">            <list>                <value>classpath*:jdbc.properties</value>            </list>        </property>    </bean>    <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">        <property name="driverClassName" value="${driver}"/>        <property name="url" value="${url}"/>        <property name="username" value="${username}"/>        <property name="password" value="${password}"/>    </bean>    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">        <property name="dataSource" ref="dataSource"/>        <property name="configLocation" value="mybatis.cfg.xml"/>    </bean>    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">        <property name="basePackage" value="mapper"/>        <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>    </bean></beans>

mvc.xml:

<?xml version="1.0" encoding="UTF-8"?><beans default-lazy-init="true"       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-4.0.xsd        http://www.springframework.org/schema/context        http://www.springframework.org/schema/context/spring-context-4.0.xsd        http://www.springframework.org/schema/mvc        http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd">    <!--该标签可以简化springMVC的相关配置，自动注册    RequestMappingHandlerMapping与RequestMappingHandleAdapter两个bean，    这是springMVC为@Controller分发请求所必须的-->    <mvc:annotation-driven/>    <context:component-scan base-package="controller"/>    <bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">        <property name="prefix" value="/WEB-INF/"/>        <property name="suffix" value=".jsp"/>    </bean>    <bean id="aa" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">        <property name="defaultEncoding" value="utf-8"/>        <property name="maxUploadSize" value="10485760000"/>        <property name="maxInMemorySize" value="40960"/>    </bean>    <bean id="multipartResolver"          class="org.springframework.web.multipart.commons.CommonsMultipartResolver">        <property name="defaultEncoding" value="UTF-8"/>    </bean>    <mvc:interceptors>        <mvc:interceptor>            <mvc:mapping path="/*"/>            <bean class="interceptor.AuthorizationInterceptor"/>        </mvc:interceptor>    </mvc:interceptors></beans>

jdbc.xml:

driver=com.mysql.jdbc.Driverurl=jdbc:mysql://localhost:3306/ssmusername=rootpassword=root

mybatis.cfg.xml:

<?xml version="1.0" encoding="UTF-8"?><!DOCTYPE configuration PUBLIC "-//mybatis.org//DTD Config 3.0//EN"        "http://www.mybatis.org/dtd/mybatis-3-config.dtd"><configuration>    <typeAliases>        <package name="vo"/>    </typeAliases>    <mappers>       <package name="mapper"/>    </mappers></configuration>

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"><mapper namespace="mapper.UserMapper">    <select id="findUserById" parameterType="int" resultType="user">    SELECT * FROM USER WHERE id=#{id}    </select>    <select id="findUserByName" parameterType="String" resultType="user">        SELECT * FROM USER WHERE NAME =#{name}    </select>    <insert id="addUser" parameterType="user">        INSERT INTO USER (id,name,pwd) VALUE (#{id},#{name},#{pwd})    </insert>    <delete id="deleteUser" parameterType="int">        DELETE FROM USER WHERE id = #{id}    </delete>    <update id="updateUser" parameterType="user">        UPDATE USER SET name = #{name},pwd = #{pwd} WHERE id = #{id}    </update></mapper>

UserController.java:

package controller;import common.GetApplication;import org.apache.commons.io.FileUtils;import org.springframework.http.HttpHeaders;import org.springframework.http.HttpStatus;import org.springframework.http.MediaType;import org.springframework.http.ResponseEntity;import org.springframework.stereotype.Component;import org.springframework.stereotype.Controller;import org.springframework.ui.Model;import org.springframework.web.bind.annotation.ModelAttribute;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.RequestParam;import serviceImp.UserServiceImp;import vo.User;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpSession;import java.io.*;/** * Created on 2017/9/4. * Description: */@Component@Controllerpublic class UserController {    private UserServiceImp userServiceImp;    @RequestMapping("/login")    public String login(@ModelAttribute User user) {        userServiceImp = (UserServiceImp) GetApplication.getApplicationContext().getBean("userServiceImp");        User user01 = userServiceImp.getUser(user.getName());        if (user01 != null && user01.getPwd().equals(user.getPwd())) {            return "upload";        }        return "false";    }    @RequestMapping("/upload")    public String regist(HttpServletRequest request, @ModelAttribute User user, Model model) throws IOException {        //获取文件名        String fileName = user.getFile().getOriginalFilename();        //获取上传文件的路径        String path = request.getServletContext().getRealPath("/fileupload");        File filePath = new File(path, fileName);        //判断路径是否存在        if (!filePath.getParentFile().exists()) {            filePath.getParentFile().mkdirs();        }        //将上传文件保存到一个目标文件当中        user.getFile().transferTo(new File(path + File.separator + fileName));        //将用户添加到model        model.addAttribute("user", user);        return "userInfo";    }    @RequestMapping(value = "/download")    public ResponseEntity<byte[]> download(HttpServletRequest request,                                           @RequestParam("filename") String filename,                                           Model model) throws Exception {        //下载文件路径        String path = request.getServletContext().getRealPath("/fileupload/");        File file = new File(path + File.separator + filename);        HttpHeaders headers = new HttpHeaders();        //下载显示的文件名，解决中文名称乱码问题        String downloadFielName = new String(filename.getBytes("UTF-8"), "iso-8859-1");        //通知浏览器以attachment（下载方式）打开图片        headers.setContentDispositionFormData("attachment", downloadFielName);        //application/octet-stream ： 二进制流数据（最常见的文件下载）。        headers.setContentType(MediaType.APPLICATION_OCTET_STREAM);        return new ResponseEntity<byte[]>(FileUtils.readFileToByteArray(file),                headers, HttpStatus.CREATED);    }}

UserMapper.java:

package mapper;import org.springframework.stereotype.Component;import org.springframework.stereotype.Service;import vo.User;/** * Created on 2017/8/29. * Description: */@Component@Servicepublic interface UserMapper {    public void addUser(User user);    public void deleteUser(int id);    public void updateUser(User user);    public User findUserById(int i) throws Exception;    public User findUserByName(String name);}

UserService.java:

package service;import org.springframework.stereotype.Service;import vo.User;/** * Created on 2017/9/6. * Description: */@Servicepublic interface UserService {    public User getUser(String name);}

UserServiceImp.java:

package serviceImp;import mapper.UserMapper;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.stereotype.Component;import org.springframework.stereotype.Service;import service.UserService;import vo.User;/** * Created on 2017/9/6. * Description: */@Component@Servicepublic class UserServiceImp implements UserService {    @Autowired    private UserMapper usermapper;    public User getUser(String name) {        User user = usermapper.findUserByName(name);        return user;    }    public void registUser(User user){        usermapper.addUser(user);    }}

User.java:

package vo;import org.springframework.web.multipart.commons.CommonsMultipartFile;import java.io.Serializable;/** * Created on 2017/8/29. * Description: */public class User implements Serializable {    private int id;    private String name;    private String pwd;    private CommonsMultipartFile file;    public CommonsMultipartFile getFile() {        return file;    }    public void setFile(CommonsMultipartFile file) {        this.file = file;    }    public int getId() {        return id;    }    public void setId(int id) {        this.id = id;    }    public String getName() {        return name;    }    public void setName(String name) {        this.name = name;    }    public String getPwd() {        return pwd;    }    public void setPwd(String pwd) {        this.pwd = pwd;    }}

index.jsp:

<%@ page contentType="text/html;charset=UTF-8" language="java" %><html><body><form action="/login" method="post" enctype="multipart/form-data">    <table>        <tr>            <td>username:</td>            <td><input type="text" name="name"/></td>        </tr>        <tr>            <td>password:</td>            <td><input type="password" name="pwd"/></td>        </tr>        <tr>            <td><input type="reset" value="重置"/></td>            <td><input type="submit" value="提交"/></td>        </tr>    </table></form></body></html>

pom.xml:

<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/maven-v4_0_0.xsd">  <modelVersion>4.0.0</modelVersion>  <groupId>com.heitian.web</groupId>  <artifactId>web-ssm</artifactId>  <packaging>war</packaging>  <version>1.0-SNAPSHOT</version>  <name>web-ssm Maven Webapp</name>  <url>http://maven.apache.org</url>  <properties>    <spring.version>4.1.6.RELEASE</spring.version>    <mybatis.version>3.2.6</mybatis.version>    <slf4j.version>1.7.7</slf4j.version>    <log4j.version>1.2.17</log4j.version>  </properties>  <dependencies>    <dependency>      <groupId>junit</groupId>      <artifactId>junit</artifactId>      <version>4.11</version>      <!-- 表示开发的时候引入，发布的时候不会加载此包 -->      <scope>test</scope>    </dependency>    <!-- spring核心包 -->    <dependency>      <groupId>org.springframework</groupId>      <artifactId>spring-core</artifactId>      <version>${spring.version}</version>    </dependency>    <dependency>      <groupId>org.springframework</groupId>      <artifactId>spring-web</artifactId>      <version>${spring.version}</version>    </dependency>    <dependency>      <groupId>org.springframework</groupId>      <artifactId>spring-oxm</artifactId>      <version>${spring.version}</version>    </dependency>    <dependency>      <groupId>org.springframework</groupId>      <artifactId>spring-tx</artifactId>      <version>${spring.version}</version>    </dependency>    <dependency>      <groupId>org.springframework</groupId>      <artifactId>spring-jdbc</artifactId>      <version>${spring.version}</version>    </dependency>    <dependency>      <groupId>org.springframework</groupId>      <artifactId>spring-webmvc</artifactId>      <version>${spring.version}</version>    </dependency>    <dependency>      <groupId>org.springframework</groupId>      <artifactId>spring-aop</artifactId>      <version>${spring.version}</version>    </dependency>    <dependency>      <groupId>org.springframework</groupId>      <artifactId>spring-context-support</artifactId>      <version>${spring.version}</version>    </dependency>    <dependency>      <groupId>org.springframework</groupId>      <artifactId>spring-test</artifactId>      <version>${spring.version}</version>    </dependency>    <!-- mybatis核心包 -->    <dependency>      <groupId>org.mybatis</groupId>      <artifactId>mybatis</artifactId>      <version>${mybatis.version}</version>    </dependency>    <!-- mybatis/spring包 -->    <dependency>      <groupId>org.mybatis</groupId>      <artifactId>mybatis-spring</artifactId>      <version>1.2.3</version>    </dependency>    <!-- 导入java ee jar 包 -->    <dependency>      <groupId>javax</groupId>      <artifactId>javaee-api</artifactId>      <version>7.0</version>    </dependency>    <!-- 导入Mysql数据库链接jar包 -->    <dependency>      <groupId>mysql</groupId>      <artifactId>mysql-connector-java</artifactId>      <version>5.1.30</version>    </dependency>    <!-- 导入dbcp的jar包，用来在applicationContext.xml中配置数据库 -->    <dependency>      <groupId>commons-dbcp</groupId>      <artifactId>commons-dbcp</artifactId>      <version>1.2.2</version>    </dependency>    <!-- JSTL标签类 -->    <dependency>      <groupId>jstl</groupId>      <artifactId>jstl</artifactId>      <version>1.2</version>    </dependency>    <!-- 日志文件管理包 -->    <!-- log start -->    <dependency>      <groupId>log4j</groupId>      <artifactId>log4j</artifactId>      <version>1.2.17</version>    </dependency>    <!-- 格式化对象，方便输出日志 -->    <dependency>      <groupId>com.alibaba</groupId>      <artifactId>fastjson</artifactId>      <version>1.1.41</version>    </dependency>    <dependency>      <groupId>org.slf4j</groupId>      <artifactId>slf4j-api</artifactId>      <version>${slf4j.version}</version>    </dependency>    <dependency>      <groupId>org.slf4j</groupId>      <artifactId>slf4j-log4j12</artifactId>      <version>${slf4j.version}</version>    </dependency>    <!-- log end -->    <!-- 映入JSON -->    <dependency>      <groupId>org.codehaus.jackson</groupId>      <artifactId>jackson-mapper-asl</artifactId>      <version>1.9.13</version>    </dependency>    <!-- 上传组件包 -->    <dependency>      <groupId>commons-fileupload</groupId>      <artifactId>commons-fileupload</artifactId>      <version>1.3.1</version>    </dependency>    <dependency>      <groupId>commons-io</groupId>      <artifactId>commons-io</artifactId>      <version>2.4</version>    </dependency>    <dependency>      <groupId>commons-codec</groupId>      <artifactId>commons-codec</artifactId>      <version>1.9</version>    </dependency>    <dependency>      <groupId>org.mybatis</groupId>      <artifactId>mybatis-spring</artifactId>      <version>1.3.1</version>    </dependency>    <dependency>      <groupId>junit</groupId>      <artifactId>junit</artifactId>      <version>4.10</version>    </dependency>  </dependencies>  <build>    <finalName>web-ssm</finalName>  </build></project>

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