SpringMVC+SpringJdbc+SQLServer+EasyUI增删改查

前言

前天用SpringJdbc连接了一把SQLServer，早上起来用SpringMVC+SpringJdbc+EasUI写了个增删改查的demo，主要是熟悉下SpringMVC相关知识点，如view层向Controller传参的几种方式，从Controller向view传递model的几种方式。 其中从view层向controller层传递时遇到了些问题，刚开始报400、415，都是由于传递的方式后台无法识别。

开发环境

idea2016、SpringMVC4、SpringJdbc4

项目结构

项目源文件

1、pom.xml

   <dependencies>
     <dependency>
       <groupId>org.springframework</groupId>
       <artifactId>spring-beans</artifactId>
       <version>4.3.6.RELEASE</version>
     </dependency>
     <dependency>
       <groupId>org.springframework</groupId>
       <artifactId>spring-context</artifactId>
       <version>4.3.6.RELEASE</version>
     </dependency>
     <dependency>
       <groupId>org.springframework</groupId>
       <artifactId>spring-core</artifactId>
       <version>4.3.6.RELEASE</version>
     </dependency>
     <dependency>
       <groupId>org.springframework</groupId>
       <artifactId>spring-test</artifactId>
       <version>4.3.6.RELEASE</version>
     </dependency>
     <dependency>
       <groupId>org.springframework</groupId>
       <artifactId>spring-web</artifactId>
       <version>4.3.6.RELEASE</version>
     </dependency>
     <dependency>
       <groupId>org.springframework</groupId>
       <artifactId>spring-webmvc</artifactId>
       <version>4.3.6.RELEASE</version>
     </dependency>
     <dependency>
       <groupId>org.springframework</groupId>
       <artifactId>spring-jdbc</artifactId>
       <version>4.3.6.RELEASE</version>
     </dependency>
     <dependency>
       <groupId>junit</groupId>
       <artifactId>junit</artifactId>
       <version>4.10</version>
     </dependency>
     <dependency>
       <groupId>com.microsoft.sqlserver</groupId>
       <artifactId>sqljdbc4</artifactId>
       <version>4.0</version>
     </dependency>
     <dependency>
       <groupId>commons-dbcp</groupId>
       <artifactId>commons-dbcp</artifactId>
       <version>1.4</version>
     </dependency>
     <dependency>
       <groupId>com.alibaba</groupId>
       <artifactId>fastjson</artifactId>
       <version>1.2.12</version>
     </dependency>
     <dependency>
       <groupId>com.fasterxml.jackson.core</groupId>
       <artifactId>jackson-core</artifactId>
       <version>2.5.0</version>
     </dependency>
     <dependency>
       <groupId>com.fasterxml.jackson.core</groupId>
       <artifactId>jackson-annotations</artifactId>
       <version>2.5.0</version>
     </dependency>
     <dependency>
       <groupId>com.fasterxml.jackson.core</groupId>
       <artifactId>jackson-databind</artifactId>
       <version>2.5.0</version>
     </dependency>
   </dependencies>

2、web.xml

<web-app>
  <display-name>Archetype Created Web Application</display-name>
  <!--告知javaEE容器，有那些内容需要添加到上下文里去-->
  <context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>classpath:applicationContext.xml</param-value>
  </context-param>
  <listener>
    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
  </listener>

  <!--spring 前端控制器-->
  <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:springmvc-servlet.xml</param-value>
    </init-param>
  </servlet>
  <servlet-mapping>
    <servlet-name>SpringMVC</servlet-name>
    <url-pattern>/</url-pattern>
  </servlet-mapping>
</web-app>

3、jdbc.properties

sqlserver.driver=com.microsoft.sqlserver.jdbc.SQLServerDriver
sqlserver.url=jdbc:sqlserver://127.0.0.1:1433;databaseName=testdb
sqlserver.username=sa
sqlserver.password=0

4、springmvc-servlet.xml

<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:mvc="http://www.springframework.org/schema/mvc"
       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/mvc
       http://www.springframework.org/schema/mvc/spring-mvc.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd">

    <bean id="jdbcConfig" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
        <property name="location" value="classpath:jdbc.properties"/>
    </bean>

    <!--配置数据源-->
    <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">
        <property name="driverClassName" value="${sqlserver.driver}"/>
        <property name="url" value="${sqlserver.url}"/>
        <property name="username" value="${sqlserver.username}"/>
        <property name="password" value="${sqlserver.password}"/>
    </bean>

    <bean id="jdbcTemplate" class="org.springframework.jdbc.core.JdbcTemplate">
        <property name="dataSource" ref="dataSource"/>
    </bean>

    <!--json数据源处理-->
    <bean id="stringConverter"
          class="org.springframework.http.converter.StringHttpMessageConverter">
        <property name="supportedMediaTypes">
            <list>
                <value>text/plain;charset=UTF-8</value>
            </list>
        </property>
    </bean>
    <bean id="jsonConverter"
          class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter"></bean>
    <bean
            class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter">
        <property name="messageConverters">
            <list>
                <ref bean="stringConverter" />
                <ref bean="jsonConverter" />
            </list>
        </property>
    </bean>

    <!--启用最新的注解器、映射器-->
    <mvc:annotation-driven/>
    <!--静态资源访问-->
    <mvc:default-servlet-handler/>

    <context:component-scan base-package="com.autohome.dao"/>
    <context:component-scan base-package="com.autohome.service"/>

    <!--扫描controller-->
    <context:component-scan base-package="com.autohome.controller"/>
    <!--配置视图解析器-->
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/views/"/>
        <property name="suffix" value=".jsp"/>
    </bean>
</beans>

5、Dao

@Repository
public class UserDaoImpl implements IUserDao {

    @Autowired
    JdbcTemplate jdbcTemplate;

    public List<User> listAllUser() {
        List<User> list = jdbcTemplate.query("select * from UserInfo",new User());
        return list;
    }

    public List<User> listPagedUser(int pageIndex,int pageSize){
        String sql="select top "+pageSize+" * from UserInfo where id not in (select top ("+pageSize+" * ("+pageIndex+" -1)) id from UserInfo)";
        List<User> list = jdbcTemplate.query(sql,new User());
        return list;
    }

    public int getUserCount() {

        int result = jdbcTemplate.queryForObject("select count(*) from UserInfo",Integer.class);
        return result;
    }

    public User getUserById(int id) {
        User user = jdbcTemplate.queryForObject("select * from UserInfo where id=?",new Object[]{id},new User());

        return user;
    }

    public int insertUser(final User user) {
        int result = jdbcTemplate.update("insert into UserInfo (UserName,age) VALUES (?,?)", new PreparedStatementSetter() {
            public void setValues(PreparedStatement ps) throws SQLException {
                ps.setString(1,user.getName());
                ps.setInt(2,user.getAge());
            }
        });

        return result;
    }

    public int updateUser(final User user) {
        int result = jdbcTemplate.update("UPDATE UserInfo set UserName=?,age=? where id=?", new PreparedStatementSetter() {
            public void setValues(PreparedStatement ps) throws SQLException {
                ps.setString(1,user.getName());
                ps.setInt(2,user.getAge());
                ps.setInt(3,user.getId());
            }
        });

        return result;
    }

    public int deleteUser(int id) {
        int result = jdbcTemplate.update("delete from UserInfo where id=?",new Object[]{id},new int[]{Types.INTEGER});
        return result;
    }
}

6、Controller

@Controller
@RequestMapping("/User")
public class UserController {

    @Autowired
    private IUserBiz userBiz;
    @RequestMapping("/index")
    public ModelAndView index(){
        List<User> list =userBiz.listAllUser();
        return new ModelAndView("index");
    }

    @RequestMapping(value="/userJson",method = RequestMethod.GET)
    public ResponseEntity<JSONObject> getUserJson(@RequestParam("page")int pageIndex, @RequestParam("rows")int pageSize){

        JSONObject obj =new JSONObject();

        List<User> list =userBiz.listPagedUser(pageIndex,pageSize);
        int total=userBiz.getUserCount();
        obj.put("total",total);
        obj.put("rows",list);

        return new ResponseEntity<JSONObject>(obj, HttpStatus.OK);
    }

    @RequestMapping(value="/deleteUser",method = RequestMethod.POST)
    public ResponseEntity<JSONObject> deleteUser(@RequestParam("id")int id){
        JSONObject obj =new JSONObject();

        int result = userBiz.deleteUser(id);
        obj.put("returncode",result);
        obj.put("msg",result>0?"success":"error");

        return new ResponseEntity<JSONObject>(obj,HttpStatus.OK);
    }

    @RequestMapping(value="/saveUser",method = RequestMethod.POST)
    public ResponseEntity<JSONObject> saveUser(@RequestBody User user){
        JSONObject obj =new JSONObject();

        int result = userBiz.insertUser(user);
        obj.put("returncode",result);
        obj.put("msg",result>0?"success":"error");

        return new ResponseEntity<JSONObject>(obj,HttpStatus.OK);
    }

    @RequestMapping(value="/editUser",method = RequestMethod.POST)
    public ResponseEntity<JSONObject> updateUser(@RequestBody User user){
        JSONObject obj =new JSONObject();

        int result = userBiz.updateUser(user);
        obj.put("returncode",result);
        obj.put("msg",result>0?"success":"error");

        return new ResponseEntity<JSONObject>(obj,HttpStatus.OK);
    }
}

总结

做这个demo的过程中，首先遇到了SpringMVC中访问静态的资源的，再就是用ajax post访问请求Controller参数的格式及语法问题，contentType参数很重要，我是通过把参数序列化成字符串，然后在Controller通过bean的方式接收，主要标注ResponseBody。