I have a JSP page with a textarea HTML component. When a user presses enter and goes to next line while typing in textarea,and when he clicks save button, it saves the data from the text area to the database. But when I load the content of the database, the line breaks are gone. Means:
我有一个带有textarea HTML组件的JSP页面。当用户在输入文本区域时按enter并转到下一行，当用户单击save按钮时，它将数据从文本区域保存到数据库。但是当我加载数据库的内容时，换行符就消失了。意思是:
HELLO
WORLD
你好，世界
is displaying like
显示如
HELLO WORLD
你好，世界
I tried the method given here How do I replace all line breaks in a string with <br /> tags? but its not working. I also tried this one How to save user-entered line breaks from a TextArea to a database? but I am not using PHP and also the solution given here for another languages to replace "\n" with "<br />" also not working. Please anyone have any idea how to do that?
我尝试了这里给出的方法，如何用
标记替换字符串中的所有换行符?但它不工作。我也尝试过这个如何将用户输入的换行符从文本区域保存到数据库?但是，我没有使用PHP，这里给出的另一种语言用“
”替换“\n”的解决方案也不起作用。有人知道怎么做吗?
I tried this code:
我试着这段代码:
String a=req.getParameter("topicdes").toString();
a.replaceAll("\n","<br />");
1 个解决方案
#1
3
The replaceAll method return a new String. Your variable a is never modified.
replaceAll方法返回一个新字符串。变量a永远不会被修改。
To solve your problem : a = a.replaceAll("\n","<br />");
要解决你的问题:a = a。replaceAll(“\ n”、“< br / >”);
In this kind of method, reading the javadoc is time saver.
在这种方法中，读取javadoc可以节省时间。
Regards.
的问候。
#1
3
The replaceAll method return a new String. Your variable a is never modified.
replaceAll方法返回一个新字符串。变量a永远不会被修改。
To solve your problem : a = a.replaceAll("\n","<br />");
要解决你的问题:a = a。replaceAll(“\ n”、“< br / >”);
In this kind of method, reading the javadoc is time saver.
在这种方法中，读取javadoc可以节省时间。
Regards.
的问候。