需要获取多行字符串以在文本框Java中显示 [英] Need to get a multiline string to display in a textbox Java

问题描述

我在项目中有一个要求. 我在javascript中生成了一个注释字符串.

I have a requirement in my project. I generate a comment string in javascript.

Coping Option: Delete all codes and replace
Source Proj Num: R21AR058864-02
Source PI Last Name: SZALAI
Appl ID: 7924675; File Year: 7924675

我将其发送到服务器，并将其作为字符串存储在db中，然后将其取回并显示在textarea中.

I send this to server where I store it as a string in db and then after that I retrieve it back and show it in a textarea.

我在javascript中将其生成为:

I generate it in javascript as :

        codingHistoryComment += 'Source Proj Num: <%=mDefault.getFullProjectNumber()%>'+'\n';
  codingHistoryComment += 'Source PI Last Name: <%=mDefault.getPILastName()%>'+'\n';
  codingHistoryComment += 'Appl ID: <%=mDefault.getApplId()%>; File Year: <%=mDefault.getApplId()%>'+'\n';

在Java中，我试图将\ n替换为
:

In java I am trying to replace the \n to
:

    String str = soChild2.getChild("codingHistoryComment").getValue().trim();
 if(str.contains("\\n")){
  str = str.replaceAll("(\r\n|\n)", "<br>");
 }

但是文本区域仍然填充有"\ n"字符:

However the textarea still get populated with the "\n" characters:

Coping Option: Delete all codes and replace\nSource Proj Num: R21AR058864-02\nSource PI Last Name: SZALAI\nAppl ID: 7924675; File Year: 7924675\n

谢谢.

推荐答案

这是一项有效的测试，请尝试一下:

Here is a test that works, try it out:

String str = "This is a test\r\n test.";
if(str.contains("\r\n")) {
    System.out.println(str);
}

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