07-dubbo练习
2019-11-29 本文已影响0人
bin_lifecycle
1.新建聚合项目 dubboparent2
新建父项目，选择maven项目，选择pom打包方式，删除src目录，只保留pom.xml文件，项目目录如下：
dubboparent2项目目录
pom.xml
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.sccl</groupId>
<artifactId>dubbo-parent2</artifactId>
<packaging>pom</packaging>
<version>0.0.1-SNAPSHOT</version>
<modules>
<module>menu-pojo</module>
<module>menu-service</module>
<module>menu-dubbo</module>
<module>menu-management</module>
</modules>
<properties>
<servlet-version>3.0.1</servlet-version>
<jsp-version>2.2</jsp-version>
<jstl-version>1.2</jstl-version>
<spring-version>4.1.6.RELEASE</spring-version>
<aspectjweaver-version>1.8.6</aspectjweaver-version>
<mybatis-version>3.2.7</mybatis-version>
<mybatis-spring-version>1.2.3</mybatis-spring-version>
<log4j-version>1.2.17</log4j-version>
<mysql-connector-java-version>5.1.38</mysql-connector-java-version>
<jackson-version>2.4.1</jackson-version>
<commons-fileupload-version>1.3.1</commons-fileupload-version>
</properties>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>${servlet-version}</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>javax.servlet.jsp</groupId>
<artifactId>jsp-api</artifactId>
<version>${jsp-version}</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>jstl</groupId>
<artifactId>jstl</artifactId>
<version>${jstl-version}</version>
</dependency>
<!-- spring -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>${spring-version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>${spring-version}</version>
</dependency>
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjweaver</artifactId>
<version>${aspectjweaver-version}</version>
</dependency>
<!-- mybatis -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>${mybatis-version}</version>
</dependency>
<!-- mybatis和spring整合 -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>${mybatis-spring-version}</version>
</dependency>
<!-- log4j 日志 -->
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>${log4j-version}</version>
</dependency>
<!-- mysql 驱动类 -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>${mysql-connector-java-version}</version>
</dependency>
<!-- jackson -->
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>${jackson-version}</version>
</dependency>
<!-- apache 图片上传 -->
<dependency>
<groupId>commons-fileupload</groupId>
<artifactId>commons-fileupload</artifactId>
<version>${commons-fileupload-version}</version>
</dependency>
<!-- dubbo -->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>dubbo</artifactId>
<version>2.5.3</version>
<exclusions>
<exclusion>
<artifactId>spring</artifactId>
<groupId>org.springframework</groupId>
</exclusion>
</exclusions>
</dependency>
<!-- 访问zookeeper的客户端jar -->
<dependency>
<groupId>com.101tec</groupId>
<artifactId>zkclient</artifactId>
<version>0.10</version>
</dependency>
</dependencies>
</dependencyManagement>
<build>
<resources>
<resource>
<directory>src/main/java</directory>
<includes>
<include>**/*.xml</include>
</includes>
</resource>
<resource>
<directory>src/main/resources</directory>
<includes>
<include>**/*.xml</include>
<include>**/*.properties</include>
</includes>
</resource>
</resources>
<pluginManagement>
<plugins>
<plugin>
<groupId>org.apache.tomcat.maven</groupId>
<artifactId>tomcat7-maven-plugin</artifactId>
<version>2.2</version>
<configuration>
<!-- 控制tomcat端口号 -->
<port>80</port>
<!-- 项目发布到tomcat后的名称 -->
<!-- / 相当于把项目发布名称为ROOT -->
<!-- /abc -->
<path>/</path>
</configuration>
</plugin>
</plugins>
</pluginManagement>
</build>
</project>
2.新建子模块 menu-pojo，继承父项目dubbo-parent2
menu-pojo的项目目录：
menu-pojo项目目录
menu-pojo下的实体类：
Menu
package com.sccl.pojo;
import java.io.Serializable;
import java.util.List;
/** 菜单实体类
* Create by wangbin
* 2019-11-28-10:19
*/
public class Menu implements Serializable {
private Integer id;
private String name;
private Integer pid;
private List<Menu> children;
private Menu parent;
public Menu getParent() {
return parent;
}
public void setParent(Menu parent) {
this.parent = parent;
}
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public Integer getPid() {
return pid;
}
public void setPid(Integer pid) {
this.pid = pid;
}
public List<Menu> getChildren() {
return children;
}
public void setChildren(List<Menu> children) {
this.children = children;
}
}
menu-pojo的pom.xml文件：实体模块继承父项目
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<parent>
<artifactId>dubbo-parent2</artifactId>
<groupId>com.sccl</groupId>
<version>0.0.1-SNAPSHOT</version>
</parent>
<modelVersion>4.0.0</modelVersion>
<artifactId>menu-pojo</artifactId>
</project>
2.新建子模块 menu-service，继承父项目dubbo-parent2
menu-service的项目目录：
menu-service的项目目录
menu-service下定义的接口：
MenuDubboService
package com.sccl.dubbo.service;
import com.sccl.pojo.Menu;
import java.util.List;
/**
* Create by wangbin
* 2019-11-28-10:44
*/
public interface MenuDubboService {
List<Menu> findAll();
Integer updateMenu(Menu menu);
Menu selectById(Integer id);
}
menu-service的pom.xml文件，dubbo的接口模块继承父项目，依赖了menu-pojo实体模块
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<parent>
<artifactId>dubbo-parent2</artifactId>
<groupId>com.sccl</groupId>
<version>0.0.1-SNAPSHOT</version>
</parent>
<modelVersion>4.0.0</modelVersion>
<artifactId>menu-service</artifactId>
<dependencies>
<dependency>
<groupId>com.sccl</groupId>
<artifactId>menu-pojo</artifactId>
<version>0.0.1-SNAPSHOT</version>
</dependency>
</dependencies>
</project>
3.新建子模块 menu-dubbo，继承父项目dubbo-parent2
menu-dubbo的项目目录：
menu-dubbo的项目目录
menu-duubo （服务提供者模块）的实现类，实现menu-service接口模块中定义的借接口：
MenuDubboServiceImpl
package com.sccl.dubbo.service.impl;
import com.sccl.dubbo.service.MenuDubboService;
import com.sccl.mapper.MenuMapper;
import com.sccl.pojo.Menu;
import org.springframework.beans.factory.annotation.Autowired;
import javax.annotation.Resource;
import java.util.List;
/**
* Create by wangbin
* 2019-11-28-12:07
*/
public class MenuDubboServiceImpl implements MenuDubboService {
@Resource
private MenuMapper menuMapper;
@Override
public List<Menu> findAll() {
List<Menu> list = menuMapper.findAll();
for (Menu menu: list) {
if(menu.getPid() != 0){
menu.setParent(menuMapper.selectById(menu.getPid()));
}
menu.setChildren(menuMapper.selectByPid(menu.getId()));
}
return list;
}
@Override
public Integer updateMenu(Menu menu) {
return menuMapper.updateMenu(menu);
}
@Override
public Menu selectById(Integer id) {
return menuMapper.selectById(id);
}
}
MenuMapper
package com.sccl.mapper;
import com.sccl.pojo.Menu;
import org.apache.ibatis.annotations.Select;
import org.apache.ibatis.annotations.Update;
import java.util.List;
/**
* Create by wangbin
* 2019-11-28-11:37
*/
public interface MenuMapper {
@Select("select * from menu")
List<Menu> findAll();
@Select("select * from menu where id = #{id}")
Menu selectById(Integer id);
@Select("select * from menu where pid = #{pid}")
List<Menu> selectByPid(Integer pid);
@Update("update menu set pid=#{pid},name=#{name} where id = #{id}")
Integer updateMenu(Menu menu);
}
Test用于启动服务
package com.sccl.test;
import com.alibaba.dubbo.container.Main;
/**
* Create by wangbin
* 2019-11-28-12:19
*/
public class Test {
public static void main(String[] args) {
Main.main(args);
}
}
resources目录：
resources目录
applicationContext-dubbo.xml服务提供者配置文件
<?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:dubbo="http://code.alibabatech.com/schema/dubbo"
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://code.alibabatech.com/schema/dubbo
http://code.alibabatech.com/schema/dubbo/dubbo.xsd">
<!--应用名称-->
<dubbo:application name="dubbo-service"/>
<!--注册中心-->
<dubbo:registry address="127.0.0.1:2181" protocol="zookeeper"></dubbo:registry>
<!--使用的协议-->
<dubbo:protocol name="dubbo" port="20880"></dubbo:protocol>
<!--暴露的接口-->
<dubbo:service interface="com.sccl.dubbo.service.MenuDubboService" ref="menuDubboServiceImpl"></dubbo:service>
<!--实现类-->
<bean id="menuDubboServiceImpl" class="com.sccl.dubbo.service.impl.MenuDubboServiceImpl"></bean>
<!-- 加载Dubbo容器，同时把spring配置文件也加载 -->
<import resource="../../applicationContext.xml"/>
</beans>
applicationContext.xmlspring配置文件
<?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:aop="http://www.springframework.org/schema/aop"
xmlns:tx="http://www.springframework.org/schema/tx"
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/aop
http://www.springframework.org/schema/aop/spring-aop.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" default-autowire="byName">
<!-- 注解扫描 -->
<context:component-scan base-package="com.sccl.dubbo.service.impl"></context:component-scan>
<!-- 加载属性文件 -->
<context:property-placeholder location="classpath:db.properties"/>
<!-- 数据源 -->
<bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
<property name="driverClassName" value="${jdbc.driver}"></property>
<property name="url" value="${jdbc.url}"></property>
<property name="username" value="${jdbc.username}"></property>
<property name="password" value="${jdbc.password}"></property>
</bean>
<!-- SqlSessionFactory -->
<bean id="factory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="dataSource"></property>
<property name="typeAliasesPackage" value="com.sccl.pojo"></property>
</bean>
<!-- 扫描器 -->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="basePackage" value="com.sccl.mapper"></property>
<property name="sqlSessionFactoryBeanName" value="factory"></property>
</bean>
<!-- 事务管理器 -->
<bean id="txManage" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource"></property>
</bean>
<!-- 声明式事务 -->
<tx:advice id="txAdvice" transaction-manager="txManage">
<tx:attributes>
<tx:method name="ins*"/>
<tx:method name="del*"/>
<tx:method name="upd*"/>
<tx:method name="*" read-only="true"/>
</tx:attributes>
</tx:advice>
<!-- 配置aop -->
<aop:config>
<aop:pointcut expression="execution(* com.sccl.dubbo.service.impl.*.*(..))" id="mypoint"/>
<aop:advisor advice-ref="txAdvice" pointcut-ref="mypoint"/>
</aop:config>
</beans>
db.properties数据库配置文件
jdbc.driver=com.mysql.jdbc.Driver
jdbc.url = jdbc:mysql://127.0.0.1:3306/ssm
jdbc.username = root
jdbc.password = 123456
log4j.properties日志文件配置
···
log4j.rootCategory=ERROR, CONSOLE ,LOGFILE
log4j.logger.com.bjsxt.mapper=DEBUG
log4j.appender.CONSOLE=org.apache.log4j.ConsoleAppender
log4j.appender.CONSOLE.layout=org.apache.log4j.PatternLayout
log4j.appender.CONSOLE.layout.ConversionPattern=%C %d{YYYY-MM-dd hh:mm:ss} %m %n
log4j.appender.LOGFILE=org.apache.log4j.FileAppender
log4j.appender.LOGFILE.File=E:/my.log
log4j.appender.LOGFILE.Append=true
log4j.appender.LOGFILE.layout=org.apache.log4j.PatternLayout
log4j.appender.LOGFILE.layout.ConversionPattern=%m %n
···
4.新建子模块 menu-management，继承父项目dubbo-parent2
menu-management项目目录
menu-management项目目录
MenuService（menu-management 定义的接口）
package com.sccl.service;
import com.sccl.pojo.Menu;
import java.util.List;
import java.util.Map;
/**
* Create by wangbin
* 2019-11-28-13:34
*/
public interface MenuService {
List<Menu> show();
Map<String,Object> showMenu(Integer id);
Integer updateMenu(Menu menu);
}
MenuServiceImpl调用dubbo服务接口，接口调用代理进行具体实现
package com.sccl.service.impl;
import com.alibaba.dubbo.config.annotation.Reference;
import com.sccl.dubbo.service.MenuDubboService;
import com.sccl.pojo.Menu;
import com.sccl.service.MenuService;
import org.springframework.stereotype.Service;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
/** web项目中实现业务时调用dubbo的接口不再直接调用mapper层，
* dubbo接口自己去找具体的实现来实现业务
* Create by wangbin
* 2019-11-28-13:39
*/
@Service
public class MenuServiceImpl implements MenuService {
//注入dubbo服务的接口，并调用
@Reference
private MenuDubboService menuDubboService;
@Override
public List<Menu> show() {
return menuDubboService.findAll();
}
@Override
public Map<String,Object> showMenu(Integer id) {
Map<String,Object> map = new HashMap<>();
map.put("menu",menuDubboService.selectById(id));
map.put("allMenu",menuDubboService.findAll());
return map;
}
@Override
public Integer updateMenu(Menu menu) {
return menuDubboService.updateMenu(menu);
}
}
MenuContrller（正常调用service）
package com.sccl.controller;
import com.sccl.pojo.Menu;
import com.sccl.service.MenuService;
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 javax.annotation.Resource;
import java.util.Map;
/**
* Create by wangbin
* 2019-11-28-13:46
*/
@Controller
public class MenuContrller {
@Resource
private MenuService menuService;
@RequestMapping("/show")
public String show(Model model){
model.addAttribute("list",menuService.show());
return "/index.jsp";
}
@RequestMapping("/showMenu")
public String showMenu(Integer id,Model model){
Map<String,Object> map = menuService.showMenu(id);
model.addAttribute("menu",map.get("menu"));
model.addAttribute("allMenu",map.get("allMenu"));
return "/update.jsp";
}
@RequestMapping("update")
public String update(Menu menu){
int index = menuService.updateMenu(menu);
if(index>0){
return "/show";
}else{
return "redirect:/showMenu?id="+menu.getId();
}
}
}
applicationContext-dubbo.xml（消费者配置）
<?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:dubbo="http://code.alibabatech.com/schema/dubbo"
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://code.alibabatech.com/schema/dubbo
http://code.alibabatech.com/schema/dubbo/dubbo.xsd">
<!-- 给当前Provider自定义个名字 -->
<dubbo:application name="dubbo-consumer"/>
<!-- 配置注册中心 -->
<dubbo:registry address="127.0.0.1:2181" protocol="zookeeper"></dubbo:registry>
<!-- 配置注解扫描 -->
<dubbo:annotation package="com.sccl.service.impl"/>
</beans>
application-spring.xml（spring配置）
<?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:aop="http://www.springframework.org/schema/aop"
xmlns:tx="http://www.springframework.org/schema/tx" 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/aop
http://www.springframework.org/schema/aop/spring-aop.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"
default-autowire="byName">
<!-- 注解扫描 -->
<context:component-scan base-package="com.sccl.service.impl"></context:component-scan>
</beans>
springmvc.xml（springmvc配置文件）
<?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:mvc="http://www.springframework.org/schema/mvc"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:dubbo="http://code.alibabatech.com/schema/dubbo"
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.xsd http://code.alibabatech.com/schema/dubbo http://code.alibabatech.com/schema/dubbo/dubbo.xsd">
<!-- 注解驱动 -->
<mvc:annotation-driven></mvc:annotation-driven>
<!-- 扫描@Controller注解 -->
<context:component-scan base-package="com.sccl.controller"></context:component-scan>
<!-- 静态资源 -->
<mvc:resources location="/js/" mapping="/js/**"></mvc:resources>
<mvc:resources location="/images/" mapping="/images/**"></mvc:resources>
<mvc:resources location="/files/" mapping="/files/**"></mvc:resources>
</beans>
db.properties（数据库配置）
jdbc.driver=com.mysql.jdbc.Driver
jdbc.url = jdbc:mysql://127.0.0.1/ssm
jdbc.username = root
jdbc.password = 123456
log4j.properties（日志配置）
···
log4j.rootCategory=ERROR, CONSOLE ,LOGFILE
log4j.logger.com.bjsxt.mapper=DEBUG
log4j.appender.CONSOLE=org.apache.log4j.ConsoleAppender
log4j.appender.CONSOLE.layout=org.apache.log4j.PatternLayout
log4j.appender.CONSOLE.layout.ConversionPattern=%C %d{YYYY-MM-dd hh:mm:ss} %m %n
log4j.appender.LOGFILE=org.apache.log4j.FileAppender
log4j.appender.LOGFILE.File=E:/my.log
log4j.appender.LOGFILE.Append=true
log4j.appender.LOGFILE.layout=org.apache.log4j.PatternLayout
log4j.appender.LOGFILE.layout.ConversionPattern=%m %n
···
web.xml配置文件
<?xml version="1.0" encoding="UTF-8"?>
<web-app version="3.0" xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd">
<!-- 上下文参数 -->
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:applicationContext-*.xml</param-value>
</context-param>
<!-- 监听器 -->
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<!-- SpringMVC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.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>springmvc</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
<!-- 字符编码过滤器 -->
<filter>
<filter-name>encoding</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>encoding</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
</web-app>
index.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>
<table border="1">
<thead>
<tr>
<td>编号</td>
<td>名称</td>
<td>父菜单名称</td>
<td>操作</td>
</tr>
</thead>
<tbody>
<c:forEach var="menu" items="${list}">
<tr>
<td>
${menu.id}
</td>
<td>
${menu.name}
</td>
<td>
<c:if test="${menu.parent==null}">
无
</c:if>
<c:if test="${menu.parent!=null}">
${menu.parent.name}
</c:if>
</td>
<td>
<a href="showMenu?id=${menu.id}">修改</a>
</td>
</tr>
</c:forEach>
</tbody>
</table>
</body>
</html>
update.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>
<form action="update" method="post">
<input type="hidden" name="id" value="${menu.id }"/>
父菜单:<select name="pid">
<option value="0">根菜单</option>
<c:forEach items="${allMenu }" var="am">
<option value="${am.id }" <c:if test="${am.id == menu.pid }">selected="selected"</c:if> >${am.name }</option>
</c:forEach>
</select><br/>
当前菜单名称:<input type="text" name="name" value="${menu.name }"/><br/>
<input type="submit" value="修改"/>
</form>
</body>
</html>
数据库数据：
数据库数据
5.启动项目，并测试
5.1 启动注册zookeeper中心
为了方便测试，直接用的windows上启动的zookeeper
5.2 启动服务提供者，启动menu-dubbod的Test类，加载dubbo容器，同时引入spring的配置文件
服务启动
5.3 配置消费者方，启动消费者
点击配置，给web项目配置tomcat
选本地tomcat
选择web项目的war包
启动web项目：
web项目启动
启动后的前台显示的效果：http://localhost:8082/web/
前台页面
访问：http://localhost:8082/web/show
显示所有菜单
点击修改菜单设置：http://localhost:8082/web/showMenu?id=2
菜单设置-1
菜单设置-2
修改父菜单为根菜单
菜单设置修改后结果
