研究了一天才搞清楚，其实挺简单的，在这里记录下，以便以后参考。
一、创建一个servlet项目
主要包括（WEB-INF）里面有classes文件夹、lib文件夹、web.xml文件。
将写好的servlet类编译成的.class放到项目中的classes文件夹下（我的是helloServlet.class）
1、在web.xml中配置
<?xml version="1.0" encoding="ISO-8859-1"?> <web-app 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_2_5.xsd" version="2.5"> <servlet> <servlet-name>HelloServlet</servlet-name> <servlet-class>helloServlet</servlet-class><!-路径加名称，如果是在classes中的myclass中则用：myclass/helloServlet。如果是lib中的.jar包则用com.gis.arcgisengine.ServiceContext的形式-> </servlet> <servlet-mapping> <servlet-name>HelloServlet</servlet-name> <url-pattern>/hello</url-pattern><!-通过url访问的别名，实际上就是对helloServlet.class的访问，前面的/不能少-> </servlet-mapping> </web-app> |
2、helloServlet文件（是servlet类）
import java.io.IOException; import java.io.PrintWriter; import java.io.ObjectInputStream; import java.io.ObjectOutputStream; import javax.servlet.ServletException; import javax.servlet.ServletOutputStream; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; public class helloServlet extends HttpServlet { private static final long serialVersionUID = 1L; public helloServlet() { super(); } public void destroy() { super.destroy(); // Just puts "destroy" string in log // Put your code here } public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { doPost(request,response); } public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { //overwrite String[] myName = null; response.setContentType("application/octet-stream"); try { ObjectInputStream ois = new ObjectInputStream(request.getInputStream()); Object obj = ois.readObject();//读取输入对象（传过来的流对象） ois.close(); myName = (String[])obj; for(int i=0;i<myName.length;i++){ System.out.println(myName[i]); } } catch (Exception e) { e.printStackTrace(); } String name = request.getParameter("name"); ServletOutputStream out = response.getOutputStream(); ObjectOutputStream oos = new ObjectOutputStream(out); oos.writeObject(name);//写入输出对象（返回给调用函数） oos.close(); out.close(); /*String name = request.getParameter("name"); if(name != null){ name = new String(name.getBytes("ISO-8859-1"),"GB2312"); }else{ name = "默认值"; } response.setContentType("text/html;charset=GB2312"); PrintWriter out = response.getWriter(); out.println("<HTML>"); out.println(" <HEAD><TITLE>A Servlet</TITLE></HEAD>"); out.println(" <BODY>"); out.println("<h1>"+name+":你好</h1>"); out.println(" </BODY>"); out.println("</HTML>"); System.out.println(name); out.flush(); out.close();*/ } public void init() throws ServletException { // Put your code here } } |
