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由于某些原因,我的程序不会写入该文件,即使我能够使try catch块无误并运行。是否有一个原因,我无法访问try块并创建此文件?在try catch块中访问和运行代码的问题
public static void main(String[] args) {
BufferedReader crunchifyBuffer = null;
try {
String crunchifyLine;
crunchifyBuffer = new BufferedReader(new FileReader("/Users/moo/Desktop/test.csv"));
// How to read file in java line by line?
while ((crunchifyLine = crunchifyBuffer.readLine()) != null) {
ArrayList<String> parsedData = new ArrayList<String>();
parsedData.add(crunchifyCSVtoArrayList(crunchifyLine).get(0));
parsedData.add(crunchifyCSVtoArrayList(crunchifyLine).get(7));
parsedData.add(crunchifyCSVtoArrayList(crunchifyLine).get(8));
System.out.println("\n"+ parsedData + "\n");
String ID = parsedData.get(0);
String[] aVPayload = new String[3];
aVPayload[0] = ID;
String holder = sdkCall(aVPayload);
try {
JSONObject jsonObj = new JSONObject(holder);
String Lat = jsonObj.getJSONObject("geo").getString("latitude");
String Long = jsonObj.getJSONObject("geo").getString("longitude");
try {
PrintWriter writer = new PrintWriter("addressValidityReport.txt", "UTF-8");
writer.println("ID" + "\t" + "CSV Lat" + "\t" + "CSV Long" + "\t" + "Lat" + "\t" + "Long" + "\t" + "Status");
while ((crunchifyLine = crunchifyBuffer.readLine()) != null) {
writer.println((crunchifyCSVtoArrayList(crunchifyLine).get(0)) + "\t" + (crunchifyCSVtoArrayList(crunchifyLine).get(7)) + "\t" + (crunchifyCSVtoArrayList(crunchifyLine).get(8)) + "\t" + Lat + "\t" + Long + "\t" + "FLAGGED" + "\n");
}
writer.close();
} catch (IOException e) {
System.out.println("ERROR, CHECK FILE PRINTING!");
}
} catch (JSONException e) {
System.out.println("unexpected JSON exception");
}
}
} catch (IOException e) {
e.printStackTrace();
} finally {
try {
if (crunchifyBuffer != null) crunchifyBuffer.close();
} catch (IOException crunchifyException) {
crunchifyException.printStackTrace();
}
}
}
它运行,但没有创建文件。有两个捕获异常会导致这种情况吗?
如果”重新得到没有例外抛出,那么你的CSV文件是空的? – Makoto
nope它是填充的,当我使包含PrintWriter的try catch部分独立时,它会创建文件,但不能访问'Lat''Long'字符串变量,我必须将它们清零。 – kastsabug
您是否尝试过使用您的调试器单步执行代码?这将使您能够精确地查看代码中每个点所设置的每个变量。 – Jason