调用产生二维码的接口一直乱码，一直没想出为什么乱码，囧，郁闷之极，还好九爷慷慨分享了文章，得知返回的是二进制，createwxaqrcode接口并不复杂，只是在官方接口并没声明返回内容，只要知道返回的内容就好办了，代码如下
post请求
-
public static String httpPostWithJSON(String url, String json)
-
throws Exception {
-
String result = null;
-
// 将JSON进行UTF-8编码,以便传输中文
-
String encoderJson = URLEncoder.encode(json, HTTP.UTF_8);
-
DefaultHttpClient httpClient = new DefaultHttpClient();
-
HttpPost httpPost = new HttpPost(url);
-
httpPost.addHeader(HTTP.CONTENT_TYPE, APPLICATION_JSON);
-
StringEntity se = new StringEntity(json);
-
se.setContentType(CONTENT_TYPE_TEXT_JSON);
-
se.setContentEncoding(new BasicHeader(HTTP.CONTENT_TYPE,
-
APPLICATION_JSON));
-
httpPost.setEntity(se);
-
// httpClient.execute(httpPost);
-
HttpResponse response = httpClient.execute(httpPost);
-
if (response != null) {
-
HttpEntity resEntity = response.getEntity();
-
if (resEntity != null) {
-
InputStream instreams = resEntity.getContent();
-
saveToImgByInputStream(instreams, "D:\\", "apr.jpg");
-
}
-
}
-
return result;
-
}
将二进制转换成文件保存
-
/**
-
* 将二进制转换成文件保存
-
* @param instreams 二进制流
-
* @param imgPath 图片的保存路径
-
* @param imgName 图片的名称
-
* @return
-
* 1：保存正常
-
* 0：保存失败
-
*/
-
public static int saveToImgByInputStream(InputStream instreams,String imgPath,String imgName){
-
int stateInt = 1;
-
if(instreams != null){
-
try {
-
File file=new File(imgPath,imgName);//可以是任何图片格式.jpg,.png等
-
FileOutputStream fos=new FileOutputStream(file);
-
byte[] b = new byte[1024];
-
int nRead = 0;
-
while ((nRead = instreams.read(b)) != -1) {
-
fos.write(b, 0, nRead);
-
}
-
fos.flush();
-
fos.close();
-
} catch (Exception e) {
-
stateInt = 0;
-
e.printStackTrace();
-
} finally {
-
}
-
}
-
return stateInt;
-
}
|
