Java简单实现webservice接口

webservice实现有多种方式

比如最常用的有axis框架，xfire框架，通过该框架可以发布wsdl接口，也可以实现webservice客户端，目前eclipse都有集成的插件，可以根据wsdl文件生成webservice客户端调用接口，但是这样部署的时候必须依赖框架的jar包，有时候可能因为环境等等原因，我们仅仅需要wsdl中的某一个接口，这时候可以通过http接口或socket接口直接发生xml数据，来调用服务端webservice服务，其实webservice底层还是发送xml数据，只是框架封装了对xml数据进行序列化与反序列化操作，下面以两个简单的例子说明http方式和socket方式。

http实现webservice接口调用例子：

import java.io.BufferedReader;  
import java.io.IOException;  
import java.io.InputStreamReader;  
import java.io.OutputStreamWriter;  
import java.io.UnsupportedEncodingException;  
import java.net.MalformedURLException;  
import java.net.URL;  
import java.net.URLConnection;  
 
public class HttpPostTest {  
    void testPost(String urlStr) {  
        try {  
            URL url = new URL(urlStr);  
            URLConnection con = url.openConnection();  
            con.setDoOutput(true);  
            con.setRequestProperty("Pragma:", "no-cache");  
            con.setRequestProperty("Cache-Control", "no-cache");  
            con.setRequestProperty("Content-Type", "text/xml");  
              
            OutputStreamWriter out = new OutputStreamWriter(con.getOutputStream());      
            String xmlInfo = getXmlInfo();  
            out.write(new String(xmlInfo));  
            out.flush();  
            out.close();  
            BufferedReader br = new BufferedReader(new InputStreamReader(con.getInputStream()));  
            String line = "";  
            StringBuffer buf = new StringBuffer();  
            for (line = br.readLine(); line != null; line = br.readLine()) {  
                buf.append(new String(line.getBytes(),"UTF-8"));  
            }  
            System.out.println(buf.toString());  
        } catch (MalformedURLException e) {  
            e.printStackTrace();  
        } catch (IOException e) {  
            e.printStackTrace();  
        }  
    }  
 
    private String getXmlInfo() {  
        // 通过wsdl文件可以查看接口xml格式数据，构造调用接口xml数据  
        String xml = "<SOAP-ENV:Envelope xmlns:SOAP-ENV=\"http://schemas.xmlsoap.org/soap/envelope/\" xmlns:SOAP-ENC=\"http://schemas.xmlsoap.org/soap/encoding/\" xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\" xmlns:xsd=\"http://www.w3.org/2001/XMLSchema\">" 
                    + "<SOAP-ENV:Body>" 
                    +    "<m:getItemDetailSingle xmlns:m=\"http:xxxxxxxxxxxxxxxxxx/\">" 
                    +        "<itemMo>" 
                    +            "<category>工厂类</category>" 
                    +            "<city>北京</city>" 
                    +            "<flag>1</flag>" 
                    +            "<itemId>0</itemId>" 
                    +            "<itemIndex>1</itemIndex>" 
                    +            "<keyword></keyword>" 
                    +            "<mobile>2147483647</mobile>" 
                    +            "<password>123456</password>" 
                    +            "<userName>sohu</userName>" 
                    +        "</itemMo>" 
                    +    "</m:getItemDetailSingle>" 
                    + "</SOAP-ENV:Body>" 
                    + "</SOAP-ENV:Envelope>";  
        return xml;  
    }  
 
    public static void main(String[] args) throws UnsupportedEncodingException {  
        String url = "http://localhost:9003/dataService/services/Job";  
        new HttpPostTest().testPost(url);  
    }  
}