报了个错？？？？先是报了404，然后就空白页了

报了个错？？？？先是报了404，然后就空白页了

department/list.do

departmentController

java.lang.reflect.InvocationTargetException

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

at java.lang.reflect.Method.invoke(Method.java:498)

at com.imooc.sm.global.DispatcherServlet.service(DispatcherServlet.java:51)

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)

at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)

at com.imooc.sm.global.EncodingFilter.doFilter(EncodingFilter.java:23)

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)

at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:199)

at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)

at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:543)

at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139)

at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:81)

at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:678)

at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87)

at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343)

at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:609)

at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65)

at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:810)

at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1623)

at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)

at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)

at java.lang.Thread.run(Thread.java:745)

Caused by: org.apache.ibatis.binding.BindingException: Invalid bound statement (not found): com.imooc.sm.dao.DepartmentDao.selectAll

at org.apache.ibatis.binding.MapperMethod$SqlCommand.<init>(MapperMethod.java:225)

at org.apache.ibatis.binding.MapperMethod.<init>(MapperMethod.java:48)

at org.apache.ibatis.binding.MapperProxy.cachedMapperMethod(MapperProxy.java:65)

at org.apache.ibatis.binding.MapperProxy.invoke(MapperProxy.java:58)

at com.sun.proxy.$Proxy17.selectAll(Unknown Source)

at com.imooc.sm.service.impl.DepartmentService.getAll(DepartmentService.java:34)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

at java.lang.reflect.Method.invoke(Method.java:498)

at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:317)

at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:190)

at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157)

at org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:98)

at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:262)

at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:95)

at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)

at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:92)

at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)

at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:207)

at com.sun.proxy.$Proxy19.getAll(Unknown Source)

at com.imooc.sm.controller.DepartmentController.list(DepartmentController.java:20)

... 30 more

package com.imooc.sm.controller;

import com.imooc.sm.entity.Department;
import com.imooc.sm.service.DepartmentService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.util.List;

@Controller("departmentController")

public class DepartmentController {
    @Autowired
    private DepartmentService departmentService;
    //  /department/list.do     /department_list.jsp
    public void list(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        List<Department> list = departmentService.getAll();
        request.setAttribute("LIST",list);
        request.getRequestDispatcher("../department_list.jsp").forward(request,response);
    }


}

package com.imooc.sm.global;

import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

import javax.servlet.GenericServlet;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;

public class DispatcherServlet extends GenericServlet {

   private ApplicationContext context;

   public void init() throws ServletException {
       super.init();
       context = new ClassPathXmlApplicationContext("spring.xml");
   }

   public void service(ServletRequest servletRequest, ServletResponse servletResponse) throws ServletException, IOException {
       HttpServletRequest request = (HttpServletRequest) servletRequest;
       HttpServletResponse response = (HttpServletResponse) servletResponse;

       /*
              staff/add.do        login.do
              staffController
              public void add(HttpServletRequest request, HttpServletResponse response){}
       *
        */
       String path = request.getServletPath().substring(1);
       System.out.println(path);
       String beanName = null;
       String methodName = null;
       int index = path.indexOf('/');
       if (index != -1) {
           beanName = path.substring(0, index) + "Controller";
           methodName = path.substring(index + 1, path.indexOf(".do"));
       } else {
           beanName = "selfController";
           methodName = path.substring(0, path.indexOf(".do"));
       }
       System.out.println(beanName);
       Object obj = context.getBean(beanName);
       try {
           Method method = obj.getClass().getMethod(methodName,HttpServletRequest.class,HttpServletResponse.class);
           method.invoke(obj,request,response);
       } catch (NoSuchMethodException e) {
           e.printStackTrace();
       } catch (IllegalAccessException e) {
           e.printStackTrace();
       } catch (InvocationTargetException e) {
           e.printStackTrace();
       }
   }
}



package com.imooc.sm.global;

import javax.servlet.*;
import java.io.IOException;

/**
* 编码过滤器
*/
public class EncodingFilter implements Filter {
   //设置字符级
   private String encoding;
   @Override
   public void init(FilterConfig filterConfig) throws ServletException {
           if(filterConfig.getInitParameter("Encoding")==null){
               encoding = "UTF-8";
           }
   }

   @Override
   public void doFilter(ServletRequest  servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {
           servletRequest.setCharacterEncoding(encoding);
           servletResponse.setCharacterEncoding(encoding);
           filterChain.doFilter(servletRequest,servletResponse);
   }

   @Override
     public void destroy() {
       encoding=null;
   }
}


<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%@taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
    <title>部门列表</title>
    <link rel="stylesheet" type="text/css" href="../css/reset.css"/>
    <link rel="stylesheet" type="text/css" href="../css/common.css"/>
    <link rel="stylesheet" type="text/css" href="../css/thems.css">
    <script type="text/javascript" src="../js/jquery-1.8.3.min.js"></script>
    <script type="text/javascript">
        $(function(){
            //自适应屏幕宽度
            window.onresize=function(){ location=location };

            var main_h = $(window).height();
            $('.hy_list').css('height',main_h-45+'px');

            var search_w = $(window).width()-40;
            $('.search').css('width',search_w+'px');
            //$('.list_hy').css('width',search_w+'px');
        });
    </script>
    <!--框架高度设置-->
</head>

<body onLoad="Resize();">
<div id="right_ctn">
    <div class="right_m">
        <div class="hy_list">
            <div class="box_t">
                <span class="name">部门列表</span>
            </div>
            <div class="space_hx">&nbsp;</div>
            <!--列表-->
            <table cellpadding="0" cellspacing="0" class="list_hy">
                <tr>
                    <th scope="col">名称</th>
                    <th scope="col">地址</th>
                    <th scope="col">操作</th>
                </tr>
                <c:forEach items="${LIST}" var="dep">
                    <tr>
                        <td>${dep.name}</td>
                        <td>${dep.address}</td>
                        <td>
                            <a href="toEdit.do?id=${dep.id}" class="btn">编辑</a>
                            <a href="remove.do?id=${dep.id}" class="btn">删除</a>
                        </td>
                    </tr>
                </c:forEach>
            </table>
            <!--列表-->
            <!--右边底部-->
            <div class="r_foot">
                <div class="r_foot_m">
                    <a href="toAdd.do" class="btn">添加</a>
                </div>
            </div>
            <!--右边底部-->
        </div>
        <!--会议列表-->
    </div>
</div>
</body>
</html>
<?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: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">
    <!--spring整合mybatis-->
    <!--数据源-->
    <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
        <property name="driverClassName" value="com.mysql.jdbc.Driver"></property>
        <property name="url" value="jdbc:mysql://localhost:3306/test1?useUnicode=true&amp;characterEncoding=UTF-8"></property>
        <property name="username" value="root"></property>
        <property name="password" value="123456"></property>
    </bean>
    <!--session工厂-->
    <bean id="sqlSessionFactor" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource"></property>
        <property name="typeAliasesPackage" value="com.imooc.sm.entity"></property>
    </bean>
    <!--持久化对象-->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="basePackage" value="com.imooc.sm.dao"></property>
        <property name="sqlSessionFactoryBeanName" value="sqlSessionFactor"></property>
    </bean>

    <!--声明事务-->
    <!--事务管理器-->
    <bean id="transcationManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource"></property>
    </bean>
    <!--声明通知-->
    <tx:advice id="txAdivice" transaction-manager="transcationManager">
        <tx:attributes>
            <tx:method name="get*" read-only="true"/>
            <tx:method name="find*" read-only="true"/>
            <tx:method name="search*" read-only="true"/>
            <tx:method name="*" propagation="REQUIRED"/>
        </tx:attributes>
    </tx:advice>
    <!--植入-->
    <aop:config>
        <aop:pointcut id="txPointcut" expression="execution(* com.imooc.sm.service.*.*(..))"/>
        <aop:advisor advice-ref="txAdivice" pointcut-ref="txPointcut"/>
    </aop:config>

    <!---->
    <context:component-scan base-package="com.imooc.sm"/>
    <aop:aspectj-autoproxy/>
</beans>
<?xml version="1.0" encoding="utf-8" ?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.4//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.imooc.sm.dao.DepartmentDao">
    <resultMap id="resultMap" type="Department">
        <id property="id" javaType="Integer" column="id"/>
        <result property="name" column="name" javaType="String"/>
        <result property="address" column="address" javaType="String"/>
    </resultMap>

    <insert id="insert" parameterType="Department" useGeneratedKeys="true">
        insert into department(name,address) values(#{name},#{address})
    </insert>
    <delete id="delete" parameterType="Integer">
        delete form department where id=#{id}
    </delete>
    <update id="update" parameterType="Department">
        update department set name=#{name},address=#{adress} where id=#{id}
    </update>
    <select id="selectById" parameterType="Integer" resultMap="resultMap">
        select * from department where id = #{id}
    </select>
    <select id="selectAll" resultMap="resultMap">
        select * from department
    </select>
</mapper>
慕用6234762 2020-04-11
源自：项目：人员管理系统开发   4-3 部门管理实现-界面
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1回答
好帮手慕阿满 2020-04-11 10:37:24

同学你好，报错提示是绑定错误，如：

http://img1.sycdn.imooc.com//climg/5e912bf10930cec908030130.jpg

建议同学查看一下如下两个目录是否相同，

http://img1.sycdn.imooc.com//climg/5e912ce509c76eea02700372.jpg

如果相同，resources下的目录创建时是使用点分隔还是斜杠分隔，如果是用点分隔，建议重新创建一下，建议同学一层一层创建，比如先创建com文件，在com文件上创建imooc文件等等。

如果我的回答解决了你的疑惑，请采纳。祝：学习愉快~

1
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  • 爱放羊的小白 #1
    我就是这个问题,创建文件时候没有用/,像创建包一样创建用. , 然后就创建了一个叫"com.xxx.sm.dao"的文件夹, 然后导致找不声明
    2020-04-23 15:22:28
  • 好帮手慕阿满 回复 爱放羊的小白 #2
    所以同学现在问题解决了吗？祝：学习愉快~
    2020-04-23 17:55:06
  • 爱放羊的小白 回复 好帮手慕阿满 #3
    解决了,用在资源目录下用com/xxx/sm/dao创建map文件夹就没有问题
    2020-04-24 12:05:01
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