- 全局创建线程池
private ExecutorService service = Executors.newFixedThreadPool(20);
- 使用线程池异步执行头像保存任务
List<Runnable> taskList = new ArrayList<>();
if(userService.initUserInfo(newInfo) > 0){
// 用户创建成功后创建线程池将用户信息异步存储到服务器上
taskList.add(new Runnable() {
@Override
public void run() {
long start = System.currentTimeMillis();
// 请求
saveWechatHeadimg(newInfo.getWechatHeadimgurl());
log.info("getWechatHeadimgurl: {}, time : {} " ,newInfo.getWechatHeadimgurl(),(System.currentTimeMillis() - start));
}
});
}
service.submit(() -> {
if(taskList.size() > 0){
try {
for(Runnable runnable : taskList){
runnable.run();
}
}catch (Exception e){
e.printStackTrace();
}
}
});
- 保存头像到服务器指定目录
/**
* 保存微信头像
* @line https://blog.csdn.net/neu_yousei/article/details/22413855
* @param wechatHeadimgurl 微信头像url
*/
public void saveWechatHeadimg(String wechatHeadimgurl) {
if (wechatHeadimgurl != null) {
InputStream inputStream = null;
HttpURLConnection httpURLConnection = null;
FileOutputStream fileOutputStream = null;
try {
URL url = new URL(wechatHeadimgurl);
httpURLConnection = (HttpURLConnection) url.openConnection();
// 设置网络连接超时时间
httpURLConnection.setConnectTimeout(10000);
// 设置应用程序要从网络连接读取数据
httpURLConnection.setDoInput(true);
httpURLConnection.setRequestMethod("GET");
int responseCode = httpURLConnection.getResponseCode();
if (responseCode == 200) {
// 从服务器返回一个输入流
inputStream = httpURLConnection.getInputStream();
}
if (inputStream != null) {
// 创建文件夹
String filePath = wechatConfig.getWechatHeadImgUrl() + url.getPath() + "/";
String[] paths = filePath.split("/");
String fileName = paths[paths.length - 1] + ".jpg";
byte[] data = new byte[1024];
int len;
StringBuilder fullPath = new StringBuilder();
for (int i = 0; i < paths.length; i++) {
fullPath.append(paths[i]).append("/");
File file = new File(fullPath.toString());
if (!file.exists()) {
file.mkdir();
}
}
// 文件写入
fileOutputStream = new FileOutputStream(filePath + fileName);
while ((len = inputStream.read(data)) != -1) {
fileOutputStream.write(data, 0, len);
}
}
} catch (IOException e) {
e.printStackTrace();
} finally {
if (inputStream != null) {
try {
inputStream.close();
} catch (IOException e) {
e.printStackTrace();
}
}
if (fileOutputStream != null) {
try {
fileOutputStream.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
}
}
参考文档：JAVA用http协议GET方法从服务器获取图片保存到本地