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该问题已被官方收录

用form表单提交restful风格的URL时，URL接收不了变量

1

rest

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 错误截图

class="cursor-pointer"> 源码

这是form表单提交
<form action="/students/${name}"  method="GET">
    要查询学员的名字:<br>
    <input type="text" name="name"  value="苏正荣">
    <br><br>
    <input type="submit" value="提交">

controller的接收方法

  //通过名字查询学员信息
    @RequestMapping(value = "/{name}", method = RequestMethod.GET)
    public ModelAndView findItemsByName(@PathVariable ("name")  String name)  {
        try {
            ModelAndView mav = new ModelAndView ();
            Students students = new Students ();
            students.setStudentName (name);
            List st = beanService.selectIf (students);
            mav.setViewName ("select");
            mav.addObject ("students", st);
            logger.info (st);
            return mav;
            }catch ( Exception e ){
                logger.error (e.getMessage ());
                return error (1);
            }
    }

该问题已被官方收录

json-taglib 0.4.1 不能直接在POM中产生依赖

0

1

json

class="cursor-pointer"> 详细描述

--报错以下；

--然后在网上查到，原因是json-taglib 0.4.1 不能直接在POM中产生依赖，只有将其添加入本地仓库，并从pom.xml中加载，才能正确运行！

--我们需要在命令行mvn一下；

--mvn install:install-file -Dfile=D:\tool\json-taglib-0.4.1.jar   -DgroupId=atg.taglib.json  -DartifactId=json-taglib -Dversion=0.4.1  -Dpackaging=jar

--注意json-taglib的jar包位置；

--注意在本项目目录下运行；

--然后就是在pom文件中添加如下依赖；

<dependency>
   <groupId>atg.taglib.json</groupId>
   <artifactId>json-taglib</artifactId>
   <version>0.4.1</version>
</dependency>
--然后写jsp文件；

<%--
 Created by IntelliJ IDEA.
 User: lihoo
 Date: 2018/8/13
 Time: 20:53
 To change this template use File | Settings | File Templates.
--%>
<%--使用@taglib指令添加json的标签库json-taglib--%>
<%@ page contentType="text/html;charset=UTF-8" language="java"
pageEncoding="UTF-8" import="java.util.*" %>

<%@taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@taglib prefix="json" uri="http://www.atg.com/taglibs/json" %>

<c:forEach items="${stus}" var="s" varStatus="st">
<json:object>
<json:property name="id" value="${s.id}"/>
<json:property name="username" value="${s.username}"/>
<json:property name="qq_num" value="${s.qq_num}"/>
<json:property name="study_type" value="${s.study_type}"/>
<json:property name="study_time" value="${s.study_time}"/>
<json:property name="school" value="${s.school}"/>
<json:property name="study_id" value="${s.study_id}"/>
<json:property name="daily_link" value="${s.daily_link}"/>
<json:property name="promise" value="${s.promise}"/>
<json:property name="teach_bro" value="${s.teach_bro}"/>
<json:property name="know_us_from" value="${s.know_us_from}"/>
<json:property name="create_at" value="${s.create_at}"/>
<json:property name="update_at" value="${s.update_at}"/>
</json:object>
</c:forEach>
--然后controller层如下；

package com.lihoo.ssm.gai.controller;

import com.github.pagehelper.PageHelper;
import com.github.pagehelper.PageInfo;
import com.lihoo.ssm.gai.model.Student;
import com.lihoo.ssm.gai.model.User;
import com.lihoo.ssm.gai.service.StudentService;
import com.lihoo.ssm.gai.service.UserService;
import com.lihoo.ssm.gai.util.Page;
import com.sun.org.apache.xpath.internal.operations.Mod;
import org.apache.log4j.Logger;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.servlet.ModelAndView;

import java.util.List;

/**
* @author lihoo
* @Title: StudentController
* @ProjectName spring_springMVC_mybatis_SMM_1
* @Description: TODO
* @date 2018/8/8-12:54
*/

@Controller
@RequestMapping("")
public class StudentController {
   private static Logger logger = Logger.getLogger(StudentController.class);

@Autowired
   StudentService studentService;

//    @RequestMapping(value = "/student", method = RequestMethod.GET)
//    public ModelAndView findStudentList(Page page) throws Exception {
//        ModelAndView mav = new ModelAndView();
//        PageHelper.offsetPage(page.getStart(), 5);
//        List<Student> stu = studentService.findStudentList();
//        int total_page = (int) new PageInfo<>(stu).getTotal();
//        page.caculateLast(total_page);
//        //        放入转发参数
//        mav.addObject("stu", stu);
////        放入jsp路径
//        mav.setViewName("listStudent");
//        return mav;
//    }

@RequestMapping(value = "/student", method = RequestMethod.GET)
   public ModelAndView listStudent() throws Exception {
       ModelAndView mav = new ModelAndView();
       List<Student> stus = studentService.findStudentList();
       mav.addObject("stus", stus);
       mav.setViewName("jsonList");
       logger.debug("OJBK");
       return mav;
   }

//    @RequestMapping(value = "/student", method = RequestMethod.PUT)
//    public ModelAndView addStudent(Student student) throws Exception {
//        logger.debug("student.getUserName():" + student.getUsername());
//        studentService.addStudent(student);
//        ModelAndView mav = new ModelAndView("redirect:/student");
//        return mav;
//    }
//
//    @RequestMapping(value = "/student/{id}", method = RequestMethod.DELETE)
//    public ModelAndView deleteStudent(Student student) throws Exception {
//        studentService.deleteStudent(student);
//        ModelAndView mav = new ModelAndView("redirect:/student");
//        return mav;
//    }
//
//    @RequestMapping(value = "/student/{id}", method = RequestMethod.GET)
//    public ModelAndView editStudent(Student student) throws Exception {
//        Student stu = studentService.findStudentById(student.getId());
//        ModelAndView mav = new ModelAndView("editStudent");
//        mav.addObject("stu", stu);
//        return mav;
//    }
//
//    @RequestMapping(value = "/student/{id}", method = RequestMethod.POST)
//    public ModelAndView updateStudent(Student student) throws Exception {
//        studentService.updateStudent(student);
//        ModelAndView mav = new ModelAndView("redirect:/student");
//        return mav;
//    }

}
--成功

class="cursor-pointer"> 错误截图

该问题已被官方收录

运行时显示bean注入不进去

0

1

SSM

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 错误截图

该问题已被官方收录

使用Json-taglib的jar包，但是jsp中出现的数据和预期不符

0

1

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 错误截图

该问题已被官方收录

页面参数传递

0

1

SSM

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 源码

@Controller
@RequestMapping("")
public class CategoryController {
    @Autowired
    CategoryService categoryService;
 
    @RequestMapping("listCategory")
    public ModelAndView listCategory(Page page){
     
        ModelAndView mav = new ModelAndView();
        List<Category> cs= categoryService.list(page);
        int total = categoryService.total();
         
        page.caculateLast(total);
         
        // 放入转发参数
        mav.addObject("cs", cs);
        // 放入jsp路径
        mav.setViewName("listCategory");
        return mav;
    }
 

jsp
       <a href="?start=0">首  页</a>
        <a href="?start=${page.start-page.count}">上一页</a>
        <a href="?start=${page.start+page.count}">下一页</a>
        <a href="?start=${page.last}">末  页</a>
    </div>
 </div>

该问题已被官方收录

tomcat 配置文件 server.xml context

1

jetty/tomcat

class="cursor-pointer"> 详细描述

该问题已被官方收录

resin运行web项目报错

0

1

jetty/tomcat

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 错误截图

该问题已被官方收录

SSM框架执行增加用户操作出现500错误。

1

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 错误截图

该问题已被官方收录

打包到服务器的项目无法跑通

1

jetty/tomcat

class="cursor-pointer"> 详细描述

2018-05-08 12:00:43org.springframework.beans.factory.BeanCreationException: Error creati
ng bean with name 'dataSource' defined in class path resource [applicationContext.xml]: 
Invocation of init method failed; nested exception is org.apache.commons.dbcp.SQLNestedE
xception: Cannot create PoolableConnectionFactory (Access denied for user 'root'@'localh
ost' (using password: YES))
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.
initializeBean(AbstractAutowireCapableBeanFactory.java:1628)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.
doCreateBean(AbstractAutowireCapableBeanFactory.java:555)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.
createBean(AbstractAutowireCapableBeanFactory.java:483)
	at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(Abs
tractBeanFactory.java:306)
	at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSin
gleton(DefaultSingletonBeanRegistry.java:230)
	at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(Abstr
actBeanFactory.java:302)
	at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(Abstrac
tBeanFactory.java:197)
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInsta
ntiateSingletons(DefaultListableBeanFactory.java:761)
	at org.springframework.context.support.AbstractApplicationContext.finishBeanFact
oryInitialization(AbstractApplicationContext.java:867)
	at org.springframework.context.support.AbstractApplicationContext.refresh(Abstra
ctApplicationContext.java:543)
	at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicati
onContext(ContextLoader.java:443)
	at org.springframework.web.context.ContextLoader.initWebApplicationContext(Conte
xtLoader.java:325)
	at org.springframework.web.context.ContextLoaderListener.contextInitialized(Cont
extLoaderListener.java:107)
	at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4
792)
	at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5
256)
	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
	at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:75
4)
	at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:730)
	at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:734)
	at org.apache.catalina.startup.HostConfig.deployWAR(HostConfig.java:985)
	at org.apache.catalina.startup.HostConfig$DeployWar.run(HostConfig.java:1857)
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:114
9)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:62
4)
	at java.lang.Thread.run(Thread.java:748)
Caused by: org.apache.commons.dbcp.SQLNestedException: Cannot create PoolableConnectionF
actory (Access denied for user 'root'@'localhost' (using password: YES))
	at org.apache.commons.dbcp.BasicDataSource.createPoolableConnectionFactory(Basic
DataSource.java:1549)
	at org.apache.commons.dbcp.BasicDataSource.createDataSource(BasicDataSource.java
:1388)
	at org.apache.commons.dbcp.BasicDataSource.getConnection(BasicDataSource.java:10
44)
	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.beans.factory.support.AbstractAutowireCapableBeanFactory.
invokeCustomInitMethod(AbstractAutowireCapableBeanFactory.java:1758)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.
invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1695)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.
initializeBean(AbstractAutowireCapableBeanFactory.java:1624)
	... 25 more
Caused by: java.sql.SQLException: Access denied for user 'root'@'localhost' (using passw
ord: YES)
	at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:965)
	at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3976)
	at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3912)
	at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:871)
	at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.ja
va:1714)
	at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1224)
	at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2190)
	at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2221)
	at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2016)
	at com.mysql.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:776)
	at com.mysql.jdbc.JDBC4Connection.<init>(JDBC4Connection.java:47)
	at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
	at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccess
orImpl.java:62)
	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstruct
orAccessorImpl.java:45)
	at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
	at com.mysql.jdbc.Util.handleNewInstance(Util.java:425)
	at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:386)
	at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:330)
	at org.apache.commons.dbcp.DriverConnectionFactory.createConnection(DriverConnec
tionFactory.java:38)
	at org.apache.commons.dbcp.PoolableConnectionFactory.makeObject(PoolableConnecti
onFactory.java:582)
	at org.apache.commons.dbcp.BasicDataSource.validateConnectionFactory(BasicDataSo
urce.java:1556)
	at org.apache.commons.dbcp.BasicDataSource.createPoolableConnectionFactory(Basic
DataSource.java:1545)
	... 34 more

class="cursor-pointer"> 错误截图

该问题已被官方收录

导包json-taglib，虽然导入成功但是一直报错.

1

json

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 错误截图