获取post请求的请求体 java 获取post请求的请求体

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智能开发先锋 2023-09-29 10:35:57

文章标签 获取post请求的请求体 java ui 服务器字符串 ipad 文章分类 Java 后端开发

/**
       安全:GET请求(参数直接在网址中)是不安全的;POST请求(参数作为请求体单独提交)安全.
 
 */
/**
 同步连接和异步连接的区别:
 同步连接:网络请求任务交由主线程完成,当主线程请求数据时,所有的用户交互都无法处理,影响用户体验.
 异步连接:网络请求任务交由子线程去完成,当子线程请求数据时,主线程依然可以处理用户交互.用户体验好.
 */
GET:
 
 
//同步请求
- (IBAction)handleSychronize:(id)sender {
    //网址字符串.
    NSString *urlSrtr = @"http://ipad-bjwb.bjd.com.cn/DigitalPublication/publish/Handler/APINewsList.ashx?date=20151101&startRecord=1&len=5&udid=1234567890&terminalType=Iphone&cid=213";
    //网址字符串中若含汉字,特殊符号等,需要进行编码转化.
    //ios9之前采用的编码转换方法
//    [urlSrtr stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
  urlSrtr = [urlSrtr stringByAddingPercentEncodingWithAllowedCharacters:[NSCharacterSet URLQueryAllowedCharacterSet]];
    //1.创建NSURL网址对象
    NSURL *url = [NSURL URLWithString:urlSrtr];
    //2.创建请求对象
    NSURLRequest *request = [NSURLRequest requestWithURL:url];
    //3.连接服务器
    NSURLResponse *respondse = nil;//服务器的响应对象.
    NSError *error = nil;//存储链接失败的错误信息.
    /**
     *   同步请求:相当于把耗时的网络请求放到同一个线程(每一个程序至少有一个线程,平时写的代码都是主线程下执行的)中处理,当数据过大时,会产生界面卡顿.
     */
   NSData *data = [NSURLConnection sendSynchronousRequest:request returningResponse:&respondse error:&error];
    //data就是我们通过网址从服务器请求到的数据.
}
//异步请求
- (IBAction)handleAsychronize:(id)sender {
    //网址字符串
    NSString *urlStr = @"http://ipad-bjwb.bjd.com.cn/DigitalPublication/publish/Handler/APINewsList.ashx?date=20151101&startRecord=1&len=5&udid=1234567890&terminalType=Iphone&cid=213";
     //创建NSURL网址对象
    NSURL *url = [NSURL URLWithString:urlStr];
    //创建请求
    NSURLRequest *request = [NSURLRequest requestWithURL:url];
    //连接服务器
    //参数2:[NSOperationQueue mainQueue] 获取主线程队列.  所给的线程决定block内部代码执行是在哪个线程下(UI界面上的刷新,用户交互,必须放在主线程执行.若在子线程中执行,可能会出现未知问题);
    //异步请求的第一种方式: block形式.
    /*
    [NSURLConnection sendAsynchronousRequest:request queue:[NSOperationQueue mainQueue] completionHandler:^(NSURLResponse * _Nullable response, NSData * _Nullable data, NSError * _Nullable connectionError) {
     //请求完成后才会回调, 返回对应的数据Data.
        //response  服务器响应对象
        //data 服务器返回的数据
        //connectionError  连接的错误信息
        //解析数据
        NSLog(@"%@",data);
    }];
     */
    //异步请求第二种方式:delegate形式
    [NSURLConnection connectionWithRequest:request delegate:self];
    
}
#pragma mark - NSURLConnectionDataDelegate -
//收到服务器响应的时候
-(void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response{
    //该方法是在建立连接过程中触发的,只会执行一次.
    //再次创建NSMutableData对象 用于拼接返回的数据
    self.mutData = [NSMutableData data];
    //response服务器响应对象
    NSLog(@"%lld",response.expectedContentLength);
}
//接收到数据时
-(void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data{
    [self.mutData appendData:data];
}
//数据传输结束时
-(void)connectionDidFinishLoading:(NSURLConnection *)connection{
    //解析数据
    NSLog(@"%@",self.mutData);
}
//连接失败时
-(void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error{
    NSLog(@"%@",error);
}

POST:

//同步请求
- (IBAction)handleSychrnize:(id)sender {
    //1.网址字符串
    NSString *urlStr = @"http://ipad-bjwb.bjd.com.cn/DigitalPublication/publish/Handler/APINewsList.ashx";
    //2.若存在汉字或特殊符号  需编码转化
    //3.创建网址对象
    NSURL *url = [NSURL URLWithString:urlStr];
    //4.创建请求(可变请求对象)
    NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];
    //5.创建参数字符串
    NSString *parmStr =@"date=20151101&startRecord=1&len=5&udid=1234567890&terminalType=Iphone&cid=213";
    //6.参数字符串转为NSData
   NSData *body = [parmStr dataUsingEncoding:NSUTF8StringEncoding];
    //7.设置请求体
    [request setHTTPBody:body];
    //8.设置请求方式:(默认请求方式是GET);
    [request setHTTPMethod:@"POST"];
//requestHeader
 
NSDictionary *headers = [NSDictionary dictionaryWithObject:@"Bearer YWMtP_8IisA-EeK-a5cNq4Jt3QAAAT7fI10IbPuKdRxUTjA9CNiZMnQIgk0LEUE${token}" forKey:@"Authorization"];
    [request setAllHTTPHeaderFields:headers];

    //连接服务器,发送请求
 NSData *data = [NSURLConnection sendSynchronousRequest:request returningResponse:nil error:nil];
    NSLog(@"%@",data);
}
//异步请求
- (IBAction)handleAsychrnize:(id)sender {
    //1.创建网址字符串
     NSString *urlStr = @"http://ipad-bjwb.bjd.com.cn/DigitalPublication/publish/Handler/APINewsList.ashx";
    //2.创建网址对象
    NSURL *url = [NSURL URLWithString:urlStr];
    //3.创建请求对象
    NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];
    //4.设置请求体
     //参数字符串
      NSString *parmStr =@"date=20151101&startRecord=1&len=5&udid=1234567890&terminalType=Iphone&cid=213";
    NSData *body =[parmStr dataUsingEncoding:NSUTF8StringEncoding];
    [request setHTTPBody:body];
    //5.设置请求方式
    [request setHTTPMethod:@"POST"];
    //异步连接
    [NSURLConnection sendAsynchronousRequest:request queue:[NSOperationQueue mainQueue]completionHandler:^(NSURLResponse * _Nullable response, NSData * _Nullable data, NSError * _NullableconnectionError) {
        NSLog(@"%@",data);
    }];
}

session:

//
//  SessionViewController.m
//  UISenior-DataRequest
//
//  Created by Eric on 16/4/11.
//  Copyright © 2016年 Eric. All rights reserved.
//
 
#import "SessionViewController.h"
 
@interface SessionViewController ()<NSURLSessionDataDelegate>
{
    long long allBytes;//存储数据总长度;
}
@property(nonatomic,strong)NSMutableData *mData;
 
@end
 
@implementation SessionViewController
/**

NSURLConnection在ios9.0之后被弃用;

替代使用NSURLSession

主要提供三种功能:1.数据请求:NSURLSessionDataTask

2.下载 :NSURLSessionDownloadTask

3.上传 : NSURLSessionUploadTask

*/
- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view.
    //获取数据
//    [self loadDataFromServer];
    //GET请求
//    [self getData];
    //POST请求
//    [self postAction];
    //获取数据
//    [self configureSession];
    //获取数据 使用delegate形式
    [self delegateAction];
}
//使用session代理的方式 请求数据
-(void)delegateAction{
    //1.URL
     NSURLRequest *request = [NSURLRequest requestWithURL:[NSURLURLWithString:@"http://img.zcool.cn/community/0332de1559f800a32f875370ac09559.jpg"]];
    //使用代理形式请求数据:不能使用全局的对话对象
    NSURLSessionConfiguration *configure = [NSURLSessionConfiguration defaultSessionConfiguration];
    //创建session 创建的同时设置代理对象.
    NSURLSession *session = [NSURLSession sessionWithConfiguration:configure delegate:self delegateQueue:[NSOperationQueue mainQueue]];
    //发起任务
  NSURLSessionDataTask *dataTask =  [session dataTaskWithRequest:request];
    //开启任务.
    [dataTask resume];
    
}
#pragma mark -NSURLSessionDelegate -
//服务器收到响应时
-(void)URLSession:(NSURLSession *)session dataTask:(NSURLSessionDataTask *)dataTask didReceiveResponse:(NSURLResponse *)response completionHandler:(void (^)(NSURLSessionResponseDisposition))completionHandler{
    //允许响应  继续接受数据 (如果不写执行到此就结束)
    completionHandler(NSURLSessionResponseAllow);
    //创建mData
    self.mData = [NSMutableData data];
    allBytes = response.expectedContentLength;
}
//接收数据时
-(void)URLSession:(NSURLSession *)session dataTask:(NSURLSessionDataTask *)dataTask didReceiveData:(NSData*)data{
    //每次返回一部分数据 需要拼接
    [self.mData appendData:data];
    //获取当前获取数据的百分比
 double scale = self.mData.length*1.0 /allBytes;
    self.scaleLable.text = [NSString stringWithFormat:@"%.2f%%",scale*100];
    self.image.image = [UIImage imageWithData:self.mData];
//    NSLog(@"%lf",scale);
}
//接收数据完成时
-(void)URLSession:(NSURLSession *)session task:(NSURLSessionTask *)task didCompleteWithError:(NSError*)error{
    if (!error) {
        NSLog(@"%@",self.mData);
    }
}
//使用自己创建的Session发起任务.
//一般项目中,建议程序中少创建session,减少底层建立连接的过程.
- (void)configureSession{
    NSURLRequest *request = [NSURLRequest requestWithURL:[NSURL URLWithString:@"http://ipad-bjwb.bjd.com.cn/DigitalPublication/publish/Handler/APINewsList.ashx?date=20151101&startRecord=1&len=5&udid=1234567890&terminalType=Iphone&cid=213"]];
    //创建对话配置对象(对会话进行设置)
    /**
     *   支持三种类型:default默认的;
                               临时会话
                               后台
     */
    NSURLSessionConfiguration *configure = [NSURLSessionConfiguration defaultSessionConfiguration];
    NSURLSession *session = [NSURLSession sessionWithConfiguration:configure];
    //使用自己创建的会话创建任务.
 NSURLSessionDataTask *task =   [session dataTaskWithRequest:request completionHandler:^(NSData * _Nullabledata, NSURLResponse * _Nullable response, NSError * _Nullable error) {
        NSLog(@"%@",data);
    }];
    [task resume];
}
//POST请求
-(void)postAction{
    NSURL *url = [NSURL URLWithString:@"http://ipad-bjwb.bjd.com.cn/DigitalPublication/publish/Handler/APINewsList.ashx"];
    //创建请求
    NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];
    //设置请求方式
    [request setHTTPMethod:@"POST"];
    //设置请求体
    NSString *parmStr =@"date=20151101&startRecord=1&len=5&udid=1234567890&terminalType=Iphone&cid=213";
    NSData *body = [parmStr dataUsingEncoding:NSUTF8StringEncoding];
    request.HTTPBody =body;
    //创建会话对象
    NSURLSession *session = [NSURLSession sharedSession];
    NSURLSessionDataTask *dataTask = [session dataTaskWithRequest:request completionHandler:^(NSData *_Nullable data, NSURLResponse * _Nullable response, NSError * _Nullable error) {
        NSLog(@"%@",data);
    }];
    //手动开启任务.
    [dataTask resume];
}
//GET请求
-(void)getData{
    NSURL *url = [NSURL URLWithString:@"http://ipad-bjwb.bjd.com.cn/DigitalPublication/publish/Handler/APINewsList.ashx?date=20151101&startRecord=1&len=5&udid=1234567890&terminalType=Iphone&cid=213"];
    NSURLRequest *request = [NSURLRequest requestWithURL:urlcachePolicy:NSURLRequestUseProtocolCachePolicy timeoutInterval:-1];
    //3. NSURLSession对象
    NSURLSession *session = [NSURLSession sharedSession];//获取系统为我们提供的全局绘画.
   //4.创建数据请求任务
NSURLSessionDataTask *task = [session dataTaskWithRequest:request completionHandler:^(NSData * _Nullable data,NSURLResponse * _Nullable response, NSError * _Nullable error) {
     NSString *str = [[NSString alloc]initWithData:data encoding:NSUTF8StringEncoding];
     NSLog(@"%@",str);
 }];
    [task resume];
}
-(void)loadDataFromServer{
    //网址字符串
    NSString *str = @"http://img.zcool.cn/community/0332de1559f800a32f875370ac09559.jpg";
    //创建NSURL对象
    NSURL *url = [NSURL URLWithString:str];
    //创建请求
    /*参数①:网址对象
       参数②:缓存策略
       参数③: 超时时间 给-1代表不设置超时时间.
     */
    NSURLRequest *request = [[NSURLRequest alloc]initWithURL:url cachePolicy:NSURLRequestUseProtocolCachePolicy timeoutInterval:10];
    //使用session请求数据
    //创建一个NSURLSession对象(网络绘画对象)
    NSURLSession *session = [NSURLSession sharedSession];
    //请求数据 创建 NSURLSessionDataTask
  NSURLSessionDataTask *dataTask = [session dataTaskWithRequest:request completionHandler:^(NSData * _Nullabledata, NSURLResponse * _Nullable response, NSError * _Nullable error) {
      //data就是从服务器获取的数据.
      //response服务器响应对象
      //error 连接错误信息.
//      NSLog(@"%@",data);
      //1.界面上的处理需要回到主线程,执行界面刷新任务
//      [self performSelectorOnMainThread:@selector(refreshUI:) withObject:data waitUntilDone:YES];
//2.GCD方式 回到主线程
     dispatch_async(dispatch_get_main_queue() , ^{
         self.image.image =[UIImage imageWithData:data];
     });
  }];
    //手动开始执行任务
    [dataTask resume];
}
//刷新界面操作
- (void)refreshUI:(NSData *)data{
    self.image.image = [UIImage imageWithData:data];
}
- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}
 
/*
#pragma mark - Navigation
 
// In a storyboard-based application, you will often want to do a little preparation before navigation
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
    // Get the new view controller using [segue destinationViewController].
    // Pass the selected object to the new view controller.
}
*/
 
@end

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