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本文實例講述了java和c#應用hessian通訊的辦法,長短常適用的技能。分享給年夜家供年夜家參考。詳細剖析以下:
起首,hessian主頁為:http://hessian.caucho.com/
上面經由過程一個簡略的例子進修hessian辦事:辦事端為Java,客戶端為C#。
先要預備好C#和Java的第三方類庫,下載地址:http://hessian.caucho.com/
下載 Hssiancharp.dll及hessian-4.0.37.jar
Hessian辦事端(java):
翻開eclipse創立一個Dynamic Web Project,將hessian-4.0.37.jar放到lib下,年夜概如圖所示:
創立一個通訊接口IHello:
package hessian.test.server; import java.util.ArrayList; public interface IHello { String sayHello(String msg); void sayHello2(int bean); void print(String msg); HelloBean getData(HelloBean bean); ArrayList<HelloBean> getBeanList(); ComplexData getComplexData(); }
IHello接口的一個完成:HelloImpl.java
package hessian.test.server; import java.util.ArrayList; public class HelloImpl implements IHello{ public String sayHello(String msg){ return "Hello " + msg; } public void sayHello2(int bean){ System.out.println("Hello " + bean); } public void print(String msg){ System.out.println(msg); } public HelloBean getData(HelloBean bean){ HelloBean result = new HelloBean(); result.setName("lu xiaoxun a new name"); result.setAge(26); System.out.print(bean.getName()); return result; } public ArrayList<HelloBean> getBeanList(){ ArrayList<HelloBean> beans = new ArrayList<HelloBean>(); HelloBean b1 = new HelloBean(); b1.setName("lu1"); b1.setAge(26); beans.add(b1); HelloBean b2 = new HelloBean(); b2.setName("lu2"); b2.setAge(27); beans.add(b2); return beans; } public ComplexData getComplexData(){ ComplexData data = new ComplexData(); ArrayList<HelloBean> beans = getBeanList(); data.setData(beans, beans.size()); return data; } }
界說用來停止數據傳輸的類,兩個類都必需完成Serializable接口:
HelloBean.java
package hessian.test.server; import java.io.Serializable; public class HelloBean implements Serializable { private static final long serialVersionUID = 570423789882653763L; private String name; private int age; public String getName() { return name; } public void setName(String name) { this.name = name; } public int getAge(){ return age; } public void setAge(int age){ this.age = age; } }
ComplexData.java
package hessian.test.server; import java.io.Serializable; import java.util.ArrayList; import java.util.HashMap; import java.util.Map; public class ComplexData implements Serializable{ private static final long serialVersionUID = 1L; private ArrayList<HelloBean> helloBeans; //private Map<String, HelloBean> helloBeanMap; private int number; public int getNumber(){ return number; } public ArrayList<HelloBean> getHelloBeans(){ return helloBeans; } public void setData(ArrayList<HelloBean> beans, int num){ this.number = num; this.helloBeans = beans; // helloBeanMap = new HashMap<String, HelloBean>(); // for (HelloBean helloBean : beans) { // if(!helloBeanMap.containsKey(helloBean.getName())) // { // helloBeanMap.put(helloBean.getName(), helloBean); // } // } } }
web.xml內容:
<?xml version="1.0" encoding="UTF-8"?> <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" id="WebApp_ID" version="3.0"> <display-name>hessian server</display-name> <servlet> <servlet-name>hessian</servlet-name> <servlet-class>com.caucho.hessian.server.HessianServlet</servlet-class> <init-param> <param-name>service-class</param-name> <param-value>hessian.test.server.HelloImpl</param-value> </init-param> </servlet> <servlet-mapping> <servlet-name>hessian</servlet-name> <url-pattern>/hessian</url-pattern> </servlet-mapping> </web-app>
Hessian客戶端(c#):
界說一個與辦事端對應的IHello接口:IHello.cs
public interface IHello { String sayHello(String msg); void sayHello2(int bean); void print(String msg); HelloBean getData(HelloBean bean); HelloBean[] getBeanList(); ComplexData getComplexData(); }
界說與辦事器端分歧的的通訊數據類:
HelloBean.cs:
using System; using System.Collections.Generic; using System.Linq; using System.Text; namespace hessian.test.server { public class HelloBean { public String Name { set { name = value; } get { return name; } } private String name; //類型和稱號須要和辦事器端分歧 public int Age { set { age = value; } get { return age; } } private int age; //類型和稱號須要和辦事器端分歧 public override String ToString() { return "Name: "+ name + " Age: " + age; } } }
ComplexData.cs:
using System; using System.Collections.Generic; using System.Linq; using System.Text; namespace hessian.test.server { public class ComplexData { private HelloBean[] helloBeans; //private Dictionary<String, HelloBean> helloBeanMap; private int number; public int GetNumber() { return number; } public HelloBean[] GetBeans() { return helloBeans; } //public Dictionary<String, HelloBean> GetBeansDic() //{ // return helloBeanMap; //} } }
在主項目中添加Hessiancsharp.dll援用。
測試代碼:
using System; using System.Collections.Generic; using System.Linq; using System.Text; using hessiancsharp.client; using hessian.test.server; namespace HessianClientTest { class Program { static void Main(string[] args) { string url = @"http://localhost:8080/HessianServerTest/hessian"; CHessianProxyFactory factory = new CHessianProxyFactory(); IHello test = (IHello)factory.Create(typeof(IHello), url); //Test function Console.WriteLine(test.sayHello("lu")); //打印從辦事器端獲得的字符串 test.sayHello2(12); //在辦事器端掌握台打印 "Hello 12" test.print("hessian"); //在辦事器端掌握台打印 "hessian" //Test Object HelloBean bean = new HelloBean(); //bean.setName("lu xiaoxun"); bean.Name = "luxiaoxun"; HelloBean result = test.getData(bean); Console.WriteLine(result.Name); Console.WriteLine(result.Age); Console.WriteLine(result); //Test Object Array HelloBean[] beans = test.getBeanList(); if (beans != null) { foreach (HelloBean data in beans) { Console.WriteLine(data.ToString()); } } //Test complex data ComplexData complexData = test.getComplexData(); if (complexData != null) { Console.WriteLine("Array number: " + complexData.GetNumber()); HelloBean[] comArray = complexData.GetBeans(); if (comArray != null) { foreach (HelloBean data in comArray) { Console.WriteLine(data.ToString()); } } //Dictionary<String, HelloBean> helloBeanMap = complexData.GetBeansDic(); //if (helloBeanMap != null) //{ // foreach (String key in helloBeanMap.Keys) // { // Console.WriteLine(helloBeanMap[key].GetHelloBeanInfo()); // } //} } Console.ReadKey(); } } }
測試成果以下圖所示:
留意事項:
1、辦事端和客戶端用於數據傳遞的對象的定名空間要分歧
IHello接口地點定名空間辦事端和客戶端可以紛歧致,然則IHello頂用到的HelloBean和ComplexData在Java辦事端和C#客戶端中兩個HelloBean類地點的定名空間要分歧。
2、類的字段要分歧
用於數據傳輸的類的字段名和字段類型要分歧(潤飾類型可以紛歧致)。
3、辦事真個類要序列化
4、盡可能應用根本的數據類型
從下面的測試可以看出,傳遞根本的類型沒有成績,傳遞通俗的類對象沒有成績,傳遞ArrayList的時刻也沒有成績(C#客戶端應用Array數組),然則傳遞HashMap字典的時刻會有成績,C#這邊應用Dictionary沒法對應分歧,能夠是因為hash函數外部完成紛歧致招致的,詳細緣由不明。
感興致的同伙可以測試一下本文實例,源碼點擊此處本站下載。