Java IntelliJ搭建SSM
2018-04-28 本文已影响0人
天不错啊
大部分代码来自这里，好不容易找个写的不错的博客。
这个博客真的是救了我
https://www.cnblogs.com/hackyo/p/6646051.html
没想到，配置这个SSM框架会如此难，用了我好几个小时，在此记录一下自己的过程。
需要准备的环境
1.JDK
2.IJ idea
3.Maven
前面两个就不说了，说一下Maven。这个我也是第一次接触这个，弄了好长时间。在此下载（https://maven.apache.org/download.cgi）
解压到文件夹，配置环境变量就略过。
1.配置Maven
打开解压到的文件夹，找到conf文件修改settings.xml,修改目录
<localRepository>E:\apache-maven-3.5.3\repo</localRepository>
创建个repo目录，然后拷一份settings.xml到这个目录
2.配置idea
打开setting，照着图修改就好了
创建Maven项目
选择webapp,下一步，然后选择你安装的Maven（千万别忘了，自带的Maven没有setting）
刚创建的项目如下
打开pop.xml
<properties>
<!-- 设置项目编码编码 -->
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<!-- spring版本号 -->
<spring.version>4.3.5.RELEASE</spring.version>
<!-- mybatis版本号 -->
<mybatis.version>3.4.1</mybatis.version>
</properties>
<dependencies>
<!-- java ee -->
<dependency>
<groupId>javax</groupId>
<artifactId>javaee-api</artifactId>
<version>7.0</version>
</dependency>
<!-- 单元测试 -->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.12</version>
</dependency>
<!-- 实现slf4j接口并整合 -->
<dependency>
<groupId>ch.qos.logback</groupId>
<artifactId>logback-classic</artifactId>
<version>1.2.2</version>
</dependency>
<!-- JSON -->
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>2.8.7</version>
</dependency>
<!-- 数据库 -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.41</version>
<scope>runtime</scope>
</dependency>
<!-- 数据库连接池 -->
<dependency>
<groupId>com.mchange</groupId>
<artifactId>c3p0</artifactId>
<version>0.9.5.2</version>
</dependency>
<!-- MyBatis -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>${mybatis.version}</version>
</dependency>
<!-- mybatis/spring整合包 -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>1.3.1</version>
</dependency>
<!-- Spring -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-beans</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-tx</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>${spring.version}</version>
</dependency>
</dependencies>
把这一堆考进去，然后Import Changes 就好了。
最重要的部分来了
照着这个图片把目录给建好
开始xml和一些其他的配置
1.jdbc.properties
jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://127.0.0.1:3306/ssmtest?useUnicode=true&characterEncoding=utf8
jdbc.username=root
jdbc.password=123456
c3p0.maxPoolSize=30
c3p0.minPoolSize=10
#关闭连接后不自动commit
c3p0.autoCommitOnClose=false
c3p0.checkoutTimeout=10000
#当获取连接失败重试次数
c3p0.acquireRetryAttempts=2
2.spring-mvc.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"
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-3.0.xsd">
<!-- 扫描web相关的bean -->
<context:component-scan base-package="com.example"/>
<!-- 开启SpringMVC注解模式 -->
<mvc:annotation-driven/>
<!-- 静态资源默认servlet配置 -->
<mvc:default-servlet-handler/>
<!-- 配置jsp 显示ViewResolver -->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="viewClass" value="org.springframework.web.servlet.view.JstlView"/>
<property name="prefix" value="/WEB-INF/views/"/>
<property name="suffix" value=".jsp"/>
</bean>
</beans>
3.spring-mybatis.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"
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/tx
http://www.springframework.org/schema/tx/spring-tx.xsd">
<!-- 扫描service包下所有使用注解的类型 -->
<context:component-scan base-package="com.example.service"/>
<!-- 配置数据库相关参数properties的属性：${url} -->
<context:property-placeholder location="classpath:jdbc.properties"/>
<!-- 数据库连接池 -->
<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
<property name="driverClass" value="${jdbc.driver}"/>
<property name="jdbcUrl" value="${jdbc.url}"/>
<property name="user" value="${jdbc.username}"/>
<property name="password" value="${jdbc.password}"/>
<property name="maxPoolSize" value="${c3p0.maxPoolSize}"/>
<property name="minPoolSize" value="${c3p0.minPoolSize}"/>
<property name="autoCommitOnClose" value="${c3p0.autoCommitOnClose}"/>
<property name="checkoutTimeout" value="${c3p0.checkoutTimeout}"/>
<property name="acquireRetryAttempts" value="${c3p0.acquireRetryAttempts}"/>
</bean>
<!-- 配置SqlSessionFactory对象 -->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<!-- 注入数据库连接池 -->
<property name="dataSource" ref="dataSource"/>
<!-- 扫描model包 使用别名 -->
<property name="typeAliasesPackage" value="com.example.model"/>
<!-- 扫描sql配置文件:mapper需要的xml文件 -->
<property name="mapperLocations" value="classpath:mapper/*.xml"/>
</bean>
<!-- 配置扫描Dao接口包，动态实现Dao接口，注入到spring容器中 -->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<!-- 注入sqlSessionFactory -->
<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>
<!-- 给出需要扫描Dao接口包 -->
<property name="basePackage" value="com.example.dao"/>
</bean>
<!-- 配置事务管理器 -->
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<!-- 注入数据库连接池 -->
<property name="dataSource" ref="dataSource"/>
</bean>
<!-- 配置基于注解的声明式事务 -->
<tx:annotation-driven transaction-manager="transactionManager"/>
</beans>
4.web.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">
<display-name>ssm</display-name>
<description></description>
<!-- 编码过滤器 -->
<filter>
<filter-name>encodingFilter</filter-name>
<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
<init-param>
<param-name>encoding</param-name>
<param-value>UTF-8</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>encodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<!-- 配置DispatcherServlet -->
<servlet>
<servlet-name>SpringMVC</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<!-- 配置springMVC需要加载的配置文件-->
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:spring-*.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
<async-supported>true</async-supported>
</servlet>
<servlet-mapping>
<servlet-name>SpringMVC</servlet-name>
<!-- 匹配所有请求，此处也可以配置成 *.do 形式 -->
<url-pattern>/</url-pattern>
</servlet-mapping>
<welcome-file-list>
<welcome-file>index.html</welcome-file>
</welcome-file-list>
</web-app>
这种地方很容易出错，能复制就复制。
现在开始SQL语句的编写
http://www.mybatis.org/mybatis-3/zh/sqlmap-xml.html
我也不解释了，自己去看。
CREATE TABLE `user` (
`id` int(11) NOT NULL AUTO_INCREMENT COMMENT '用户ID',
`email` varchar(255) NOT NULL COMMENT '用户邮箱',
`password` varchar(255) NOT NULL COMMENT '用户密码',
`username` varchar(255) NOT NULL COMMENT '用户昵称',
`role` varchar(255) NOT NULL COMMENT '用户身份',
`status` int(1) NOT NULL COMMENT '用户状态',
`regTime` datetime NOT NULL COMMENT '注册时间',
`regIp` varchar(255) NOT NULL COMMENT '注册IP',
PRIMARY KEY (`id`),
UNIQUE KEY `email` (`email`) USING BTREE
) ENGINE=InnoDB AUTO_INCREMENT=2 DEFAULT CHARSET=utf8;
INSERT INTO `user` VALUES ('1', 'xxx', 'xxxxx', 'xxxxx', 'root', '0', '2017-03-28 09:40:31', '127.0.0.1');
SET FOREIGN_KEY_CHECKS=1;
<?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.example.dao.IUserDao">
<select id="selectUser" resultType="User" parameterType="long">
SELECT * FROM user WHERE id = #{id}
</select>
<insert id="insertUser" parameterType="com.example.model.User" flushCache="true">
INSERT INTO user
(email,password,username,role,status,regTime,regIp)
VALUE(#{email},#{password},#{username},#{role},#{status},#{regTime},#{regIp})
</insert>
<update id="updateUser" parameterType="com.example.model.User" flushCache="true">
UPDATE user set
email = #{email},
password = #{password},
username = #{username},
role = #{role},
status = #{status},
regTime = #{regTime},
regIp = #{regIp}
WHERE id = #{id}
</update>
<delete id="deleteUser" parameterType="long" flushCache="true" >
delete from user where id = #{id}
</delete>
</mapper>
开始代码的编写
1.dao
public interface IUserDao {
User selectUser(long id);
int insertUser(User user);
int updateUser(User user);
int deleteUser(long id);
}
2.model
public class User {
private long id;
private String email;
private String password;
private String username;
private String role;
private int status;
private Date regTime;
private String regIp;
}
GET AND SET 自己去生成
3.service
public interface IUserService {
User selectUser(long userId);
int insertUser(User user);
int updateUser(User user);
int deleteUser(long userId);
}
3.5.service impl
@Service("userService")
public class UserServiceImpl implements IUserService {
@Resource
private IUserDao userDao;
public User selectUser(long userId) {
return userDao.selectUser(userId);
}
public int insertUser(User user) {
return userDao.insertUser(user);
}
public int updateUser(User user) {
return userDao.updateUser(user);
}
public int deleteUser(long userId) {
return userDao.deleteUser(userId);
}
}
4.controller
@Controller
@RequestMapping("/user")
public class UserController {
@Resource
private IUserService userService;
@RequestMapping("/showUser.do")
public void selectUser(HttpServletRequest request, HttpServletResponse response) throws IOException {
request.setCharacterEncoding("UTF-8");
response.setCharacterEncoding("UTF-8");
long useId = Long.parseLong(request.getParameter("id"));
User user = this.userService.selectUser(useId);
ObjectMapper mapper = new ObjectMapper();
response.getWriter().write(mapper.writeValueAsString(user));
response.getWriter().close();
}
}
5.Test
// 加载spring配置文件
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration({"classpath:spring-mybatis.xml"})
public class IUserDaoTest {
@Autowired
private IUserDao dao;
@Test
public void testSelectUser() throws Exception {
//查询
// long id = 1;
// User user = dao.selectUser(id);
// System.out.println(user.getUsername());
// 添加
// user = new User();
// user.setEmail("1515023qweq757@qq.com");
// user.setPassword("123456");
// user.setUsername("Test2");
// user.setRole("admin");
// user.setStatus(1);
// Date date = new Date();
// user.setRegTime(date);
// user.setRegIp("127.0.0.1");
// System.out.println(dao.insertUser(user));
// 删除
// System.out.println("Delete:"+dao.deleteUser(2));
//修改
// User user = new User();
// user.setId(1);
// user.setEmail("update_email");
// user.setPassword("update_password");
// user.setUsername("update1_name");
// user.setRole("update1_role");
// user.setStatus(100);
// Date date = new Date();
// user.setRegTime(date);
// user.setRegIp("update1_ip");
// System.out.println("Update:"+dao.updateUser(user));
}
}
到这一步，应该就可以运行了。
框架搭建就差不多了。
勉强测试跑通了
代码来自一开始那个博客，他那个XML哪里有个小问题。
这样看起来有问题，其实没问题。浪费了我好久时间。
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>test</title>
</head>
<script>
function selectUser() {
var xmlhttp = new XMLHttpRequest();
xmlhttp.onreadystatechange = function () {
if (xmlhttp.readyState == 4 && xmlhttp.status == 200) {
document.getElementById("test").innerHTML = xmlhttp.responseText;
}
}
xmlhttp.open("POST", "user/showUser.do", true);
xmlhttp.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
xmlhttp.send("id=1");
}
</script>
<body>
<p id="test">Hello World!</p>
<button type="button" onclick="selectUser()">onclick test</button>
</body>
</html>
运行一下就好了。有BUG自己修，反正我没有
