Mule ESB Hello实例(四)

Mule ESB Hello实例（四）这是一个最简单的mule esb入门实例,其中用了flow ,endpoint ,transformer,component这些组件,这些组件的配置也是最简单配置.情景:1.在浏览器地址栏输入http://localhost:9090/hello-mule?name=oliver&age=20,会返回"Hello oliver,your age is 10".1.在浏览器地址栏输入http://localhost:9090/love-mule?name=oliver&age=20,会返回"Love oliver,your age is 10".配置文件:[html]view plaincopy1.<?xml version="1.0"encoding="UTF-8"?>2.<mule xmlns="/schema/mule/core"3.xmlns:xsi="/2001/XMLSchema-instance"4.xmlns:spring="/schema/beans"5.xmlns:http="/schema/mule/http"6.xmlns:vm="/schema/mule/vm"7.xsi:schemaLocation="8. /schema/beans http://www.springframewo/schema/beans/spring-beans-3.0.xsd9. /schema/mule/core /schema/mule/core/3.2/mule.xsd10. /schema/mule/http /schema/mule/http/3.2/mule-http.xsd11. /schema/mule/vm /schema/mule/vm/3.2/mule-vm.xsd">12.13.<!-- 将客户端传过来的Http数据转化成Person对象 -->14.<custom-transformer name="HttpDataToPersonTransformer"class="com.mule.transformer.HttpDataToPersonTransformer"/>15.16.<!-- 将service操作结果用Html语言封装起来 -->17.<custom-transformer name="StringToHtmlTransformer"class="com.mule.transformer.StringToHtmlTransformer"/>18.19.<!-- 设置相应内容为text/html格式 -->20.<message-properties-transformer name="setHtmlContentType"overwrite="true">21.<add-message-property key="Content-Type"value="text/html"/>22.<!-- Tomcat lowercases headers, need to drop this old one too -->23.<delete-message-property key="content-type"/>24.</message-properties-transformer>25.26.<!-- 根据客户端传过来的内容,返回相应的Hello语句 -->27.<flow name="hello">28.<inbound-endpoint address="http://localhost:9090/hello-mule?method=sayHello"exchange-pattern="request-response">29.<transformer ref="HttpDataToPersonTransformer"/>30.<response>31.<transformer ref="StringToHtmlTransformer"/>32.<transformer ref="setHtmlContentType"/>33.</response>34.</inbound-endpoint>35.36.<component class="ponent.WelcomService"/>37.38.</flow>39.40.<!-- 根绝客户端传过来的内容,返回相应的Love语句 -->41.<flow name="love">42.<inbound-endpoint address="http://localhost:9090/love-mule?method=sayLove"exchange-pattern="request-response">43.<transformer ref="HttpDataToPersonTransformer"/>44.<response>45.<transformer ref="StringToHtmlTransformer"/>46.<transformer ref="setHtmlContentType"/>47.</response>48.</inbound-endpoint>49.50.<component class="ponent.WelcomService"/>51.52.</flow>53.54.</mule>Transformer:1.HttpDataToperson 将客户端传过来的http数据转换成component所需要Person类型[html]view plaincopy1.package com.mule.transformer;2.3.import org.mule.api.MuleMessage;4.import org.mule.api.transformer.TransformerException;5.import org.mule.transformer.AbstractMessageTransformer;6.7.import com.mule.domain.Person;8.9.public class HttpDataToPersonTransformer extends AbstractMessageTransformer{10.11. @Override12. public Object transformMessage(MuleMessage message, String outputEncoding)13. throws TransformerException {14. String name = message.getInboundProperty("name");15. String age = message.getInboundProperty("age");16. if( age == null ) {17.age = "10";18. }19.20. return new Person(name,Integer.parseInt(age));21. }22.23.}2.StringToHtmlTransformer 将component处理后返回的string类型数据,封装成html 数据[java]view plaincopy1.package com.mule.transformer;2.3.import org.mule.api.transformer.TransformerException;4.import org.mule.transformer.AbstractTransformer;5.6.import com.mule.util.HtmlTemplateUtil;7.8.public class StringToHtmlTransformer extends AbstractTransformer {9.10.@Override11.protected Object doTransform(Object src, String enc)12.throws TransformerException {13. String str = (String)src;14.15.return HtmlTemplateUtil.getSimpleHtml(str);16. }17.18.}Component:WelcomService返回欢迎内容[java]view plaincopy1.package ponent;2.3.import com.mule.domain.Person;4.5.public class WelcomService {6.7.public String sayHello( Person person ){8.return" Hello "+person.getName()+", your age is "+person.getAge();9. }10.11.public String sayLove( Person person ){12.return" Love you "+person.getName()+", your age is "+person.getAge();13. }14.15.}Person类:[java]view plaincopy1.package com.mule.domain;2.3.public class Person {4.5.private String name;6.private int age;7.8.public Person(){}9.10.public Person(String name,int age ){ = name;12.this.age = age;13. }14.15.public String getName() {16.return name;17. }18.19.public void setName(String name) { = name;21. }22.23.public int getAge() {24.return age;25. }26.27.public void setAge(int age) {28.this.age = age;29. }30.31.}[java]view plaincopy1.HtmlTemplateUtil 工具类:用html语句封转给定的text[java]view plaincopy1.package com.mule.util;2.3.public class HtmlTemplateUtil {4.5.public static String getSimpleHtml( String text ){6. String output = "";7.8. output += "<html>";9. output += "<head>";10. output += "<meta http-equiv=\"Content-Language\" content=\"en-us\"/>";11. output += "<meta http-equiv=\"Content-Type\" content=\"text/html; charset=windows-1252\"/>";12. output += "<title>Bookstore Administration Console</title>";13. output += "</head>";14.15. output += "<body link=\"#FFFFFF\" vlink=\"#FFFFFF\" alink=\"#FFFFFF\" bgcolor=\"#990000\" text=\"#FFFFFF\">";16. output += text;17. output += "</body>";18.19. output += "<br/><a href=\"/bookstore-admin/\">Return toHome Page</a>";20. output += "</html>";21.22.return output;23. }24.25.}。