建议你把:
java.net.URL url = new java.net.URL(getDocumentBase(),"servlet/DataStreamEcho");
这行换掉:
java.net.URL url = new java.net.URL("http://127.0.0.1:8080/SiteName/servlet/DataStreamEcho");
java.net.URL url = new java.net.URL(getDocumentBase(),"servlet/DataStreamEcho");
这行换掉:
java.net.URL url = new java.net.URL("http://127.0.0.1:8080/SiteName/servlet/DataStreamEcho");
或则是试图写只读的connection.
是否是因为你在applet中的输出和在service中的输出不是同中类型的数据??