程序不报错，但是页面就是加载不出来，一直转圈圈 ,求帮助！

今天本想练习一下学过的ssm框架，但是遇到了一个无从下手的问题，框架搭建好了，文件配置好了，数据库表建好了，但是访问不到是什么鬼！ 求大神指点

一、首先我建了一个表，用来放用户名与密码的，如图

 

 表名随便起的 Spring_account

二、来创建框架 配置文件

 

 

2.1 Mybatis配置文件：

代码：（文件名：SqlMapConfig.xml）

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

2.2spring配置文件

分成两层（applicationContext_dao.xml与applicationContext_service.xml）

applicationContext_dao.xml:

    <!--配置属性文件-->
    <context:property-placeholder location="classpath:jdbc.properties"></context:property-placeholder>

    <!--配置数据源-->
   <bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource">
       <property name="url" value="${jdbc.url}"/>
       <property name="username" value="${jdbc.username}"/>
       <property name="password" value="${jdbc.password}"/>
   </bean>

    <!--配置mybatis工厂-->
    <bean id="sessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<!--        连接数据源-->
        <property name="dataSource" ref="dataSource"/>
<!--        加载mybatis配置文件-->
        <property name="configLocation" value="classpath:SqlMapConfig.xml"/>
<!--        配置实体类  给实体类起别名  别名为实体类的类名-->
        <property name="typeAliasesPackage" value="com.rttjavalx.domain"/>
    </bean>
    <!--配置mapper所在的包-->
  <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
      <property name="sqlSessionFactoryBeanName" value="sessionFactory"/>
      <property name="basePackage" value="com.rttjavalx.dao"/>
  </bean>
</beans>

applicationContext_service.xml:

<!--配置业务逻辑层，给spring扫描识别该包下的所有类，使用注解方式-->
<!--配置组件扫描器    -->
   <context:component-scan base-package="com.rttjavalx.service"/>
<!--   事务加载驱动器-->
   <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<!--      加载驱动需要数据源-->
      <property name="dataSource" ref="dataSource"/>
   </bean>
<!--   spring切面的配置-->
   <tx:advice id="interceptor" transaction-manager="transactionManager">
      <tx:attributes>
         <tx:method name="*select*" read-only="true"/>
         <tx:method name="*search*" read-only="true"/>
         <tx:method name="*get*" read-only="true"/>
         <tx:method name="*find*" read-only="true"/>

         <tx:method name="*delete*" propagation="REQUIRED"/>
         <tx:method name="*remove*" propagation="REQUIRED"/>
         <tx:method name="*clear*" propagation="REQUIRED"/>

         <tx:method name="*modify*" propagation="REQUIRED"/>
         <tx:method name="*update*" propagation="REQUIRED"/>
         <tx:method name="*set*" propagation="REQUIRED"/>
         <tx:method name="*change*" propagation="REQUIRED"/>

         <tx:method name="*insert*" propagation="REQUIRED"/>
         <tx:method name="*add*" propagation="REQUIRED"/>
         <tx:method name="*save*" propagation="REQUIRED"/>

         <tx:method name="*" propagation="SUPPORTS"/>

      </tx:attributes>
   </tx:advice>
<!--   切面与切入点的连接-->
   <aop:config>
      <aop:pointcut id="mypoincut" expression="execution(* *..service.*.*(..))"/>
      <aop:advisor advice-ref="interceptor" pointcut-ref="mypoincut"/>
   </aop:config>
</beans>

2.3springmvc配置文件

(springmvc.xml)

<!--扫描根包 -->
<context:component-scan base-package="com.rttjavalx.controller"/>

<!--视图解析器-->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
   <property name="prefix" value="/admin/"/>
   <property name="suffix" value=".jsp"/>
</bean>
<!--注解驱动-->
<mvc:annotation-driven/>

 

2.4jdbc

(jdbc.properties)

jdbc.url=jdbc:mysql://localhost:3306/Spring_account?characterEncoding=utf-8
jdbc.username=root
jdbc.password=root

2.5 web.xml

<servlet>
        <servlet-name>DispatcherServlet</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <init-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>classpath:springmvc.xml</param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>DispatcherServlet</servlet-name>
        <url-pattern>*.do</url-pattern>
    </servlet-mapping>
<!--    监听器-->
    <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>
<!--    过滤器-->
    <filter>
        <filter-name>characterEncodingFilter</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>
        <init-param>
            <param-name>forceRequestEncoding</param-name>
            <param-value>true</param-value>
        </init-param>
        <init-param>
            <param-name>forceResponseEncoding</param-name>
            <param-value>true</param-value>
        </init-param>
    </filter>
    <filter-mapping>
        <filter-name>characterEncodingFilter</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>

2.6 pom.xml

<properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <maven.compiler.source>1.8</maven.compiler.source>
    <maven.compiler.target>1.8</maven.compiler.target>

    <junit.version>4.12</junit.version>
    <spring.version>5.2.5.RELEASE</spring.version>
    <mybatis.version>3.5.1</mybatis.version>
    <mybatis.spring.version>1.3.1</mybatis.spring.version>
    <mybatis.paginator.version>1.2.15</mybatis.paginator.version>
    <mysql.version>8.0.22</mysql.version>
    <slf4j.version>1.6.4</slf4j.version>
    <druid.version>1.1.12</druid.version>
    <pagehelper.version>5.1.2</pagehelper.version>
    <jstl.version>1.2</jstl.version>
    <servlet-api.version>3.0.1</servlet-api.version>
    <jsp-api.version>2.0</jsp-api.version>
    <jackson.version>2.9.6</jackson.version>
  </properties>

  <dependencies>

    <!-- spring -->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-context</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-webmvc</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-aspects</artifactId>
      <version>${spring.version}</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-jms</artifactId>
      <version>${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 -->
    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis</artifactId>
      <version>${mybatis.version}</version>
    </dependency>
    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis-spring</artifactId>
      <version>${mybatis.spring.version}</version>
    </dependency>
    <dependency>
      <groupId>com.github.miemiedev</groupId>
      <artifactId>mybatis-paginator</artifactId>
      <version>${mybatis.paginator.version}</version>
    </dependency>
    <dependency>
      <groupId>com.github.pagehelper</groupId>
      <artifactId>pagehelper</artifactId>
      <version>${pagehelper.version}</version>
    </dependency>
    <!-- MySql -->
    <dependency>
      <groupId>mysql</groupId>
      <artifactId>mysql-connector-java</artifactId>
      <version>${mysql.version}</version>
    </dependency>
    <!-- 连接池 -->
    <dependency>
      <groupId>com.alibaba</groupId>
      <artifactId>druid</artifactId>
      <version>${druid.version}</version>
    </dependency>

    <!-- junit -->
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>${junit.version}</version>
      <scope>test</scope>
    </dependency>


    <!-- JSP相关 -->
    <dependency>
      <groupId>jstl</groupId>
      <artifactId>jstl</artifactId>
      <version>${jstl.version}</version>
    </dependency>
    <dependency>
      <groupId>javax.servlet</groupId>
      <artifactId>javax.servlet-api</artifactId>
      <version>3.0.1</version>
      <scope>provided</scope>
    </dependency>
    <dependency>
      <groupId>javax.servlet</groupId>
      <artifactId>jsp-api</artifactId>
      <scope>provided</scope>
      <version>${jsp-api.version}</version>
    </dependency>
    <!-- Jackson Json处理工具包 -->
    <dependency>
      <groupId>com.fasterxml.jackson.core</groupId>
      <artifactId>jackson-databind</artifactId>
      <version>${jackson.version}</version>
    </dependency>
    <dependency>
      <groupId>commons-io</groupId>
      <artifactId>commons-io</artifactId>
      <version>2.4</version>
    </dependency>
    <dependency>
      <groupId>commons-fileupload</groupId>
      <artifactId>commons-fileupload</artifactId>
      <version>1.3.1</version>
    </dependency>

<!--    汉语拼音-->
    <dependency>
      <groupId>com.belerweb</groupId>
      <artifactId>pinyin4j</artifactId>
      <version>2.5.0</version>
    </dependency>
  </dependencies>

  <!-- 插件配置 -->
  <build>
    <plugins>
      <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-compiler-plugin</artifactId>
        <configuration>
          <source>1.8</source>
          <target>1.8</target>
          <encoding>UTF-8</encoding>
        </configuration>
      </plugin>
    </plugins>
    <!--识别所有的配置文件-->
    <resources>
      <resource>
        <directory>src/main/java</directory>
        <includes>
          <include>**/*.properties</include>
          <include>**/*.xml</include>
        </includes>
        <filtering>false</filtering>
      </resource>
      <resource>
        <directory>src/main/resources</directory>
        <includes>
          <include>**/*.properties</include>
          <include>**/*.xml</include>
        </includes>
        <filtering>false</filtering>
      </resource>
    </resources>

2.7index.jsp

<body>
  <div>
      <h2>欢迎来到我的世界</h2>
      <form action="login.do" method="get">
      <table>
          <tr>
              <td>用户名：</td>
              <td><input type="text" name="username" value="张三"></td>
          </tr>
          <tr>
              <td>密码：</td>
              <td><input type="password" name="pwd" value="000000"></td>
          </tr>
          <tr>
              <td><input type="reset" value="重置"/> </td>
              <td><input type="submit" value="登录"/></td>
          </tr>
      </table>
      </form>
  </div>
</body>

2.8 dao层

public interface UserMapper {
   //查找所有用户
    List<User> selectUserAll();
    //通过用户名和密码验证
    User selectUserByNameAndPwd(@Param("username")String name,@Param("password") String pwd);
}

<mapper namespace="com.rttjavalx.dao.UserMapper">
<!--    通过用户名和密码验证用户-->
    <select id="selectUserByNameAndPwd" resultType="com.rttjavalx.domain.User">
        select username,password from user where username=#{username} and password=#{password}
    </select>
</mapper>

2.9 service

@Service
public class UserLoginImpl implements UserLogin {
    @Autowired
    private UserMapper userMapper;
    @Override
    public int findUser(String name, String password) {
        User user = userMapper.selectUserByNameAndPwd(name, password);
        System.out.println(user);
        return 0;
    }
}

2.10 controller

@Controller
public class UserContorller {
    @Autowired
    private UserLogin userLogin;
    @RequestMapping(value = "/login.do")
    public ModelAndView getUser(String username,String pwd){
        ModelAndView mv=new ModelAndView();
        int num = userLogin.findUser(username, pwd);
        if(num==1){
            mv.setViewName("start");
        }else mv.setViewName("err");
        return null;
    }
}

2.11 domain

private Integer id;

private String username;

private String password;

private String sex;

private String email;
还有get set 方法

 

上述就是配置过程  ，想实现登录功能    知道界面不整齐  别笑  还没来得及修

 

首页idex还是可以出来的  但是问题出在了  点击登录按钮   它就开始转圈圈   誓死不出现主页start

　　

 

 

 弄了一下午  不论是重写代码  还是 重启服务器  抑或是debug  都没找到原因   问题是它后台不报错  不知道从哪下手 

是我代码哪里写错了？ 还是我打开方式不对？@_@ 求大神指点迷津