Dynemic Web Project中使用servlet的 doGet()方法接收來自瀏覽器用戶端發送的add學生資訊形成json字串輸出到瀏覽器並儲存到本地磁碟檔案，

Dynemic Web Project中使用servlet的 doGet()方法接收來自瀏覽器用戶端發送的add學生資訊形成json字串輸出到瀏覽器並儲存到本地磁碟檔案，

package com.swift.servlet;

import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import com.google.gson.Gson;
import com.swift.student.Student;

@WebServlet("/add")
public class AddStudentServlet extends HttpServlet {
private static final long serialVersionUID = 1L;

public AddStudentServlet() {
super();
}

protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
response.getWriter().append("Served at: ").append(request.getContextPath());
int id=Integer.parseInt(request.getParameter("id"));
String name=request.getParameter("name");
int age=Integer.parseInt(request.getParameter("age"));
Student st=new Student(id,name,age);
Gson gson=new Gson();
String json=gson.toJson(st);
response.getWriter().append(json);
FileOutputStream fos=new FileOutputStream("d:/1.json");//這裡檔案名稱的路徑斜杠同注釋的斜杠，Java之外的都用這個/
OutputStreamWriter osw=new OutputStreamWriter(fos);//這個輸出也可以了，能夠輸出字串了
osw.write(json);
osw.flush();
osw.close();
//PrintWriter pw=new PrintWriter(osw);//封裝類，得到更強的輸出功能
//pw.write(json);
//pw.println();
//pw.write("\"");
//pw.flush();
//pw.close();

}

protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
doGet(request, response);
}

}