android - HttpPost Iphone 与 Android

Question

1)在苹果手机上，

- (void) postData:(NSMutableData *)_body withAction:(NSString *)_action binary:(BOOL)_binary
{
    [self stopProcess];



    binary = _binary;

    NSMutableURLRequest *request = [[[NSMutableURLRequest alloc] init] autorelease];
    NSString *url = [NSString stringWithFormat:API_FORMAT, APP_SERVER, _action, [self getSession]];
    if (debug_switch) {
    NSLog(@"The action is %@", _action);
        NSLog(@"The accessing server API call Datafeed is %@", url);}
    [request setURL:[NSURL URLWithString:url]];
    [request setHTTPMethod:@"POST"];


    //TRACE(@"url: %@", url);

    if(_body != nil)
    {
        NSString *contentType = [NSString stringWithFormat:@"multipart/form-data; boundary=%@", boundary];
        [request addValue:contentType forHTTPHeaderField: @"Content-Type"];
        [request setHTTPBody:_body];
    }

    //con = [NSURLConnection connectionWithRequest:request delegate:self];

    if(con != nil) {
        [con release];
    }
    con = [[NSURLConnection alloc] initWithRequest:request delegate:self];

    if (con) 
    {
        dataDict = nil;
        loading = YES;
        if(receivedData == nil) {
            receivedData = [[NSMutableData data] retain];
        }
        [receivedData setLength:0];
    }

}

static NSString *boundary = @"---------------------------147378274664144922";

@implementation DataFeed

BOOL connectable = NO;

///////////////////////////////

- (NSMutableData *) initContentBody
{
    NSMutableData *body = [NSMutableData data];
    [body appendData:[self addFormData:@"uid" withString:[[UIDevice currentDevice] uniqueIdentifier]]];
    return body;
}


//////////////////////////

- (NSData *) addFormBoundary
{
    return [[NSString stringWithFormat:@"\r\n--%@\r\n",boundary] dataUsingEncoding:NSUTF8StringEncoding];
}

//////////////////////////////////////////


- (NSData *) addFormData:(NSString *)_name withInt:(int)_value
{
    return [self addFormData:_name withString:[[NSNumber numberWithInt:_value] stringValue]];
}


- (NSData *) addFormData:(NSString *)_name withFloat:(float)_value
{
    return [self addFormData:_name withString:[[NSNumber numberWithFloat:_value] stringValue]];
}


- (NSData *) addFormData:(NSString *)_name withString:(NSString *)_value
{
    NSMutableData *body = [NSMutableData data];
    [body appendData:[self addFormBoundary]];
    [body appendData:[[NSString stringWithFormat:@"Content-Disposition: form-data; name=\"%@\";\r\n\r\n%@", _name, _value] dataUsingEncoding:NSUTF8StringEncoding]];    
    return body;
}

- (NSData *) addFormData:(NSString *)_name filename:(NSString *)_filename withData:(NSData *)_data
{
    NSMutableData *body = [NSMutableData data];
    [body appendData:[self addFormBoundary]];
    [body appendData:[[NSString stringWithFormat:@"Content-Disposition: form-data; name=\"%@\"; filename=\"%@\"\r\n", _name, _filename] dataUsingEncoding:NSUTF8StringEncoding]];
    [body appendData:[[NSString stringWithString:@"Content-Type: application/zip\r\n"] dataUsingEncoding:NSUTF8StringEncoding]]; 
    [body appendData:[[NSString stringWithString:@"Content-Transfer-Encoding: binary\r\n\r\n"] dataUsingEncoding:NSUTF8StringEncoding]];
    [body appendData:_data];    
    return body;
}

2)在安卓上，

public void executeHttpPost() throws Exception {
    String address = "";
    HttpClient client = new DefaultHttpClient();
    HttpPost post = new HttpPost(address);

    List<NameValuePair> pairs = new ArrayList<NameValuePair>();
    pairs.add(new BasicNameValuePair("key1", "value1"));
    pairs.add(new BasicNameValuePair("key2", "value2"));
    post.setEntity(new UrlEncodedFormEntity(pairs));

    HttpResponse response = client.execute(post);

}

问题，android的body data可以设置成非json格式，键值对吗？正如您在 iphone 上看到的那样，body 可以是任何参数，不一定是键值对。您能举一个在 android 上发布数据可以是非 json 格式的例子吗？

Answer 1

您不限于 UrlEncodedFormEntity，查看 org.apache.http.HttpEntity 的“已知间接子类”界面(在页面顶部)。

最常用的大概是:

• ByteArrayEntity:一个实体，其内容是从字节数组中检索的。
• FileEntity:从文件中检索内容的实体。
• InputStreamEntity:从 InputStream 获取内容的流实体。
• SerializableEntity:获取一个Serializable对象并输出其序列化形式
• StringEntity:从字符串中检索内容的实体。
• 最后是 UrlEncodedFormEntity:一个由 url 编码对列表组成的实体。

(此列表不完整，请查看上面的链接)

下面是一些如何使用不同类型实体的示例:

HttpClient client = new DefaultHttpClient();
HttpPost post = new HttpPost(address);

// a string entity containing JSON:
post.setEntity(new StringEntity("{ \"actually\" : [\"json\", \"this time\"]}");

// or uploading an image file:
post.setEntity(new FileEntity(new File("some/local/image.png"), "image/png");

// or some random bytes:
byte[] randomBytes = new byte[128];
new Random().nextBytes(randomBytes);
post.setEntity(new ByteArrayEntity(randomBytes);

HttpResponse response = client.execute(post);
...

当然，不要一次完成所有这些，一次调用 setEntity() 即可!如果您需要 MIME 多部分请求，请查看 this tutorial by Vikas Patel (您需要更新的 Apache HTTP 客户端 JAR)。