于是立马检查从服务器读取的代码：
/**
* 返回该链接地址的html数据
*
* @param urlStr
* @return
* @throws CommonException
*/
public static String doGet(String urlStr) throws CommonException
{
StringBuffer sb = new StringBuffer();
try
{
URL url = new URL(urlStr);
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
conn.setRequestMethod(”GET”);
conn.setConnectTimeout(5000);
conn.setDoInput(true);
conn.setDoOutput(true);
if (conn.getResponseCode() == 200)
{
InputStream is = conn.getInputStream();
int len = 0;
byte[] buf = new byte[1024];
while ((len = is.read(buf)) != -1)
{
sb.append(new String(buf, 0, len, “UTF-8”));
}
is.close();
} else
{
throw new CommonException(“访问网络失败！”);
}
} catch (Exception e)
{
throw new CommonException(“访问网络失败！”);
}
return sb.toString();
}发现可能是由于我采用字节流从网络读取数据，且每次读取1024个字节，读取完成后能后强制转化为字符串，又因为使用编码为UTF-8，UTF-8是一种变长码（英文1个字节，中文两个字节），所以1024可能会造成刚好截取了某个汉字的一半（前一个字节），然后转化为字符串时造成乱码。唯一不理解的在java环境下，使用控制台打印出是没有乱码的。如果你有不同的理解欢迎留言探讨。
/**
* 返回该链接地址的html数据
*
* @param urlStr
* @return
* @throws CommonException
*/
public static String doGet(String urlStr) throws CommonException
{
StringBuffer sb = new StringBuffer();
try
{
URL url = new URL(urlStr);
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
conn.setRequestMethod(”GET”);
conn.setConnectTimeout(5000);
conn.setDoInput(true);
conn.setDoOutput(true);
if (conn.getResponseCode() == 200)
{
InputStream is = conn.getInputStream();
InputStreamReader isr = new InputStreamReader(is,“UTF-8”);
int len = 0;
char[] buf = new char[1024];
while ((len = isr.read(buf)) != -1)
{
sb.append(new String(buf, 0, len));
}
is.close();
isr.close();
} else
{
throw new CommonException(“访问网络失败！”);
}
} catch (Exception e)
{
throw new CommonException(“访问网络失败！”);
}
return sb.toString();
}然而问题依旧有可能未解决。
终极方法
读取数据流的时候不要设置大小，直接读取每一行数据
public static String doGET(final String strUrl, JSONObject params) throws Exception {
HttpURLConnection conn = null;
String rs = "";
try {
StringBuilder sb = new StringBuilder();
String strUrl_ = strUrl + ("?" + urlencode(params));
URL url = new URL(strUrl_);
conn = (HttpURLConnection) url.openConnection();
conn.setRequestMethod("GET");
conn.setRequestProperty("User-agent", userAgent);
conn.setUseCaches(false);
conn.setChunkedStreamingMode(0);
conn.setConnectTimeout(DEF_CONN_TIMEOUT);
conn.connect();
InputStream is = conn.getInputStream();
String strRead = null;
byte[] chars = new byte[1024]; //在 InputStreamDemo中用字节
int lenth = 0;
if (is != null) {
String line;
BufferedReader reader = new BufferedReader(new InputStreamReader(is, DEF_CHATSET));
while ((line = reader.readLine()) != null) {
isMessyCode(line);
sb.append(line);
}
}
rs = sb.toString();
is.close();
} catch (Exception e) {
// TODO: handle exception
e.printStackTrace();
} finally {
if (conn != null) {
conn.disconnect();
}
}
return rs;
}
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最后编辑时间为:2022-04-07 21:50:48