将String解析为Int时引发NumberFormatException

Question

我试图从流中读取字节并将其附加到stringbuilder后，将字符串解析为int值。 但是，当我尝试将字符串解析为Int值时，将引发NumberFormatException。 在语句周围加上“ try and catch”也无济于事，因为它会解析“”（猜测为空）。

以下是我的代码详细解释了我的问题：

String s = ClientStream.getInputStream(socks.getInputStream());

myDataSplitter splitter = myDataSplitter.getSplitStream(s);

/*
* Parse the page's length in bytes to an Int value.
* (Type)--Header
*/
int contIndx = Integer.parseInt(splitter.getContentLength("Content-Length:"));   

ClientStream.getInputStream()方法代码：

public static String getInputStream(InputStream inputstream){

    StringBuffer stringbuilder = new StringBuffer();

    while(true) {

        try {
            rdL = inputstream.read();
        } catch (IOException e) {
            Log.e("InjectClientStream","Error reading byte from stream", e);
        }
        if(rdL == -1){
            break;
        }
        stringbuilder.append((char) rdL);

        if (stringbuilder.indexOf("\r\n\r\n") != -1) {
            return stringbuilder.toString();
        }
    }
    return stringbuilder.toString();
}

myDataSplitter.getSplitStream()方法代码：

public static myDataSplitter getSplitStream(String str1) {

    int i = 0;
    myDataSplitter splitter = new myDataSplitter(str1);

    String[] as = splitter.allInpRequest.split("\r\n",2);

    if(as.length > 1) {

    String[] as1 = as[1].replace("\r\n\r\n", "").split("\r\n");

    if(i <= as1.length) {
        i++;
    String[] as2 = as1[i].split(":");
    try {
        splitter.map.put(as2[0], as2[1]);
    }catch(Exception e) {
        e.printStackTrace();
    }
    }
}
    return splitter;
}

然后引发错误消息的方法。

public String getContentLength(String paramString) {
    //Returns the value of the mapped in string value
    //"Content-Length"
    String s = ((String)this.map.get(paramString));
    if(s != null) {
        return s;
    }
    return ""; 
}

我究竟做错了什么？

Answer 1

我认为您需要尝试：

String s = this.map.get(paramString).toString();

代替

String s = ((String)this.map.get(paramString))