java - 迭代excel值并与txt文件值匹配

Question

我正在尝试读取 Excel 单元格值，然后尝试将 Excel 单元格值与 txt 文件中存在的值进行匹配。

问题是，当执行以下代码时，它仅将 Excel 单元格中的 1675683811 值与 DATA.txt 中的 1675683811 值匹配，然后对于其他三个值不匹配。如何将所有四个值与 DATA.txt 文件匹配。

在一个特定的 Excel 单元格中，值如下所示:

String meid = "1675683811,2002199221,3893245956,9184020971";

txt 文件中的值如下所示:

"1675683811","590483002",
"2002199221","876015525",
"3893245956","502139683",
"9184020971","1029595777",

以下是我的代码:

static int i = "";
File objFile = new File("C:\\DATA.txt");
BufferedReader br = new BufferedReader(new FileReader(objFile));
String st;

String[] memid =meid.split(",");
int matchValue = 0;

for(i = 0;i<memid.length;i++){                  
    matchValue = 0;
    System.out.println("Memberid is :"+memid[i]);

    while ((st = br.readLine()) != null){
        if (st.toString().contains(memid[i].toString())){
            matchValue++;   
        } else {

        } 
    }
    if (matchValue != 0) {
        objReport.setValidationMessageInReport("PASS" , memid[i] + " text Value is Matched");   
    } else {
        //                  continue;
        objReport.setValidationMessageInReport("FAIL" , memid[i] + " text Value is not Matched");
    }
}

Answer 1

您尝试在 for 循环内读取文件。一旦文件被读取/头到达文件末尾，BufferedReader 始终返回 null。即，在 for (i>=1) 循环的第一次迭代之后，while 循环始终返回 null。我会在 for 循环之外读取该文件，将其存储在一个数组中，然后检查您的 Excel 行元素是否包含该字符串。

像这样的事情:

  int i = 0;
  File objFile = new File("C:\\DATA.txt");
  BufferedReader br = new BufferedReader(new FileReader(objFile));
  String st;
  String strMemId = "1675683811,2002199221,3893245956,9184020972";
  String[] memid =strMemId.split(",");
  int matchValue = 0;
  String fromFile = "";
  while ((st = br.readLine()) != null)
  {
      fromFile += st;

  }
  for(i = 0;i<memid.length;i++)
  {
      matchValue = 0;

      if (fromFile.contains(memid[i].toString())){
          matchValue++;   
      }
      System.out.println("Memberid is :"+memid[i]);


      if (matchValue != 0) {
           objReport.setValidationMessageInReport("PASS" , memid[i] + " text Value is Matched");      
      } else {
          //                  continue;
          objReport.setValidationMessageInReport("FAIL" , memid[i] + " text Value is not Matched");
      }
  }
  br.close();

希望这有帮助:)