2017.07.06

get  post

上午：通过get方法设置了一个id参数，可以通过id动态访问不同图片文件夹，从而动态显示出不同文件夹下的图文信息，其实也就是通过id访问遍历不同的文件夹下的图片，从而达到动态显示的效果，没有多少坑。
设置id的方法：single.jsp?id=<%=flag %>  (flag为设置的索引参数)
single.jsp页面获取id的方法：<% int id = Integer.parseInt(request.getParameter("id"))%>


下午：
上午设置好了图片的动态显示，下午准备设置相应图片的文字信息，但是一下就入坑了。。。。整个类是这样写的
package com;

import java.io.*;
import java.util.*;

public class ImgPage {
	public List<Img> imgArray = new ArrayList(); 
	public String Title;
	public String Content;
	
	public String getTitle(){
		return this.Title;
	}
	public String getContent(){
		return this.Content;
	}
	public void setTile(String title){
		this.Title=title;
	}
	public void setContent(String content){
		this.Content=content;
	}
	public List<ImgPage> init() throws IOException{
		List<ImgPage> imgPageArray = new ArrayList(); 
		String path = "E:\\MyEclipse workplace\\LoginJsp\\WebRoot\\picdemo\\img\\";
		File f = new File(path);
		File [] fileArray = f.listFiles();
		for(File fs:fileArray){
			if(fs.isDirectory()){
				ImgPage page = new ImgPage();
				String [] msg = null;
				//int flag = 2;
				File [] disFileArray = fs.listFiles();
				//System.out.println("这是文件夹" + fs.getName() + "下的文件：");
				for(File dis:disFileArray){
					//System.out.println(dis.getName());
					if(dis.getName().indexOf("txt") > -1){//过滤掉文件夹中的content.txt文件，并对content.txt文件进行处理，content.txt文件中存储的是关于图片文件夹中每张图片的描述
						msg = getPageMsg(path+fs.getName()+"\\"+"content.txt");
						System.out.println("msg.lenth:" + msg.length);
						for(int i = 0;i < msg.length;i++){
							System.out.println("msg[" + i + "]:" + msg[i]);
						}
						continue;
					}
					//System.out.println(msg);
					
					Img img = new Img();
					img.setPath( fs.getName() + "/" + dis.getName());
					/*if(flag<msg.length){
						img.setContent(msg[flag]);
					}
					
					flag++;*/
					page.imgArray.add(img);
					//System.out.println(msg[flag]);
				}
				page.setTile(msg[0]);
				page.setContent(msg[1]);
				for(int i = 2;i<msg.length;i++){
					page.imgArray.get(i-2).setContent(msg[i]);
				}
				imgPageArray.add(page);
			}
			
		}
		return imgPageArray;
	}
	public String[] getPageMsg(String path){
		try{
			BufferedReader in = null;
			String value = "";
			FileReader r = new FileReader(path);//
			in = new BufferedReader(r);
			String ss;
			while((ss = in.readLine())!=null){
				value+=ss;
			}
			
			String [] s = value.split("---");
			
			r.close();
			in.close();
			
			return s;
		}catch (Exception ex){
			ex.printStackTrace();
		}
		return null;
		
	}

<!--这里是前端表单-->
				<form action="MsgServer.jsp" name="usermsg" accept-charset="utf-8" id="usermsg"  method="post">
					<%request.setCharacterEncoding("utf-8"); %>
					<div class="row">
						<div class="col-md-12">
							<div class="row">
								<div class="col-md-6">
									<div class="form-group">
										<input type="text" class="form-control" placeholder="姓名" name="name" >
									</div>
									<div class="form-group">
										<input type="text" class="form-control" placeholder="邮箱" name="email">
									</div>
									<div class="form-group">
										<input type="text" class="form-control" placeholder="手机" name="phone">
									</div>
								</div>
								<div class="col-md-6">
									<div class="form-group">
										<textarea  id="message" cols="30" rows="7" class="form-control" placeholder="请留言" name="msg"></textarea>
									</div>
									<div class="form-group">
										<input type="submit" class="btn btn-primary btn-md" value="留言">
									</div>
								</div>
								
							</div>
						</div>
						
					</div>
				</form>
				
////下面是后端

//Msgio.java

package com;

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;

public class Msgio {
	private static String path = "E:/MyEclipse workplace/LoginJsp/msg.txt";  
    private static  File filename = new File(path);
    public static void createFile() throws IOException{  
        if (!filename.exists()) {  
            filename.createNewFile();  
            System.err.println("系统初始化完成！");  
        }  
    } 
    public static String readFile() throws IOException{
    	BufferedReader in = null;
		
		String value = "";
		FileReader r = new FileReader(path);
		in = new BufferedReader(r);
		String ss;
		while((ss = in.readLine())!=null){
			value = value + ss;
			value += "------";
		}
		in.close();
		return value;
		
    }
    public static void writeFile(String ss) throws IOException{
    	
    	FileWriter w = new FileWriter(path);
		BufferedWriter out = new BufferedWriter(w);
		
		out.write(ss);
		
		out.close();
    	
    }
	
	
    
}

//Msg.java

package com;

import java.io.*;
import java.util.*;

public class Msg {
	public void init() throws IOException{
		Msgio.createFile();
	}
	public String name;
	public String email;
	public String phonenum;
	public String msg;
	public List<Msg> getMsg() throws IOException {
		init();
		List<Msg> msgArray = new ArrayList();
		String s = Msgio.readFile();
		if(s!=""){
			String ts[] = s.split("------");
			for(String tts:ts){
				String ms[] = tts.split("####");
				Msg msg = new Msg();
				msg.name = ms[0];
				msg.email = ms[1];
				msg.phonenum = ms[2];
				msg.msg = ms[3];
				msgArray.add(msg);
			}
			return msgArray;
		}else {
			return null;
		}
		
	}
}