查询字符串在将其传递到 jsp 页面中的 href 时需要额外的字符

Question

我在 JSP 的 href 中的查询字符串中传递一个参数。所以当我点击 link 之后，它会提供一些额外的字符以及参数值。

String s="approved";
String activationcode=request.getParameter("activationcode");
if(activationcode!=null)
{
try
{
    Class.forName("oracle.jdbc.driver.OracleDriver");  
    Connection con=DriverManager.getConnection("jdbc:oracle:thin:@localhost:1521:xe","system","up78cp5317");  
    Statement stmt=con.createStatement();   
    stmt.execute("update (select Approval.status as st from Approval join Activity on Activity.userid=Approval.id where Activity.activationcode='"+activationcode+"') up set up.st='"+s+"'");
    //stmt.executeUpdate("UPDATE ( SELECT Approval.STATUS AS st FROM Approval JOIN Activity ON Activity.userid = Approval.id WHERE Activity.activationcode = '"+activationcode+"') up SET up.st = '"+s+"'");
    //stmt.executeUpdate("update (select Approval.status as st from Approval join Activity on Activity.userid=Approval.id where Activity.activationcode='"+activationcode+"') up set up.st='"+s+"'");      
    //stmt.executeUpdate("delete from activity where activationcode='"+activationcode+"'");
    stmt.close();
    con.close();
}

点击 link 后，我得到的是： http://localhost:8090/TL/OnlineApprovalButton.jsp?activationcode=%2780f91f53-918f-45c4-9ee6-9eda9c40f72d%27

这里%27是在参数值的head和trail中加入

Answer 1

激活码的值可能以撇号 (') 开头，当您执行 url 撇号编码时，结果为 %27。您可以在此处找到不同字符的 url 编码。 https://www.w3schools.com/tags/ref_urlencode.asp

Answer 2

我只是替换字符串，然后 trim 字符串。

String activationcode=request.getParameter("activationcode").repalceAll("'"," ").trim();

查询字符串在将其传递到 jsp 页面中的 href 时需要额外的字符

Query string takes extra character while passing it into the href in jsp page

java

jsp

query-string