在jsp编译成java之后发现在java文件中有很多 out.write("\r\n")，经过调查测试认为是jsp中属于非页面输出的行都以这种方式被编译了，请问有什么方法能够去掉这些 out.write("\r\n")？我用的是MyEclipse5.1.1 Tomcat5.5服务器 struts2基盘
因为我的JSP文件很大，如果打出的空行太多有可能会导致文件超长崩溃
修改编译后的java文件也不太可行，
我不知道怎么能将自己改的java文件编译成class，
由于不是独立的java文件，所以控制台编译会提示很多错误
因为我的JSP文件很大，如果打出的空行太多有可能会导致文件超长崩溃
修改编译后的java文件也不太可行，
我不知道怎么能将自己改的java文件编译成class，
由于不是独立的java文件，所以控制台编译会提示很多错误
我在开发环境下把tomcat下lib包加到路径下
可以编译index_jsp.java
package org.apache.jsp;import javax.servlet.*;
import javax.servlet.http.*;
import javax.servlet.jsp.*;public final class index_jsp extends org.apache.jasper.runtime.HttpJspBase
implements org.apache.jasper.runtime.JspSourceDependent { private static final JspFactory _jspxFactory = JspFactory.getDefaultFactory(); private static java.util.List _jspx_dependants; private javax.el.ExpressionFactory _el_expressionfactory;
private org.apache.AnnotationProcessor _jsp_annotationprocessor; public Object getDependants() {
return _jspx_dependants;
} public void _jspInit() {
_el_expressionfactory = _jspxFactory.getJspApplicationContext(getServletConfig().getServletContext()).getExpressionFactory();
_jsp_annotationprocessor = (org.apache.AnnotationProcessor) getServletConfig().getServletContext().getAttribute(org.apache.AnnotationProcessor.class.getName());
} public void _jspDestroy() {
} public void _jspService(HttpServletRequest request, HttpServletResponse response)
throws java.io.IOException, ServletException { PageContext pageContext = null;
HttpSession session = null;
ServletContext application = null;
ServletConfig config = null;
JspWriter out = null;
Object page = this;
JspWriter _jspx_out = null;
PageContext _jspx_page_context = null;
try {
response.setContentType("text/html; charset=GB2312");
pageContext = _jspxFactory.getPageContext(this, request, response,
null, true, 8192, true);
_jspx_page_context = pageContext;
application = pageContext.getServletContext();
config = pageContext.getServletConfig();
session = pageContext.getSession();
out = pageContext.getOut();
_jspx_out = out; out.write("\r\n");
out.write(" \r\n");
out.write("<!DOCTYPE html PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\" \"http://www.w3.org/TR/html4/loose.dtd\">\r\n");
out.write("<html>\r\n");
out.write("<head>\r\n");
out.write("<meta http-equiv=\"Content-Type\" content=\"text/html; charset=ISO-8859-1\">\r\n");
out.write("<title>Insert title here</title>\r\n");
out.write("</head>\r\n");
out.write("<body>\r\n");
out.write("<form method=\"post\" name=\"helloForm\" action=\"HelloWorldAction.do\">\r\n");
out.write(" <hr>谁想说<hr>\r\n");
out.write("<br>请输入想说话的人的名字：<input type=\"text\" name=\"username\" value=\"\"><br>\r\n");
out.write("<input type=\"submit\" name=\"submit\" value=\"提交\">\r\n");
out.write("</form>\r\n");
out.write(" \r\n");
out.write("</body>\r\n");
out.write("</html>");
} catch (Throwable t) {
if (!(t instanceof SkipPageException)){
out = _jspx_out;
if (out != null && out.getBufferSize() != 0)
try { out.clearBuffer(); } catch (java.io.IOException e) {}
if (_jspx_page_context != null) _jspx_page_context.handlePageException(t);
}
} finally {
_jspxFactory.releasePageContext(_jspx_page_context);
}
}
}
在server.xml中定义
<servlet>
<servlet-name>jsp</servlet-name>
<servlet-class>org.apache.jasper.servlet.JspServlet</servlet-class>
<init-param>
<param-name>fork</param-name>
<param-value>false</param-value>
</init-param>
<init-param>
<param-name>trimSpaces </param-name>
<param-value>true </param-value>
</init-param>
<init-param>
<param-name>xpoweredBy</param-name>
<param-value>false</param-value>
</init-param>
<load-on-startup>3</load-on-startup>
</servlet>
这个方案有个缺点，它会去掉所有jsp EL标签之间的空格的换行符，在部分情况下也来带来不便。
如：Your name is ${firstName} ${lastName}. ==输出为==> Your name is firstNamelastName.
两个${}变量之间的空格也会消失。要解决这个问题是相当麻烦，要引入一个只有一个空格的变量。
<c:set var="one_space"> </c:set>
Your name is ${firstName}${one_space}${lastName}.
还有个方法就是在ｊｓｐ中加入
<%@ page trimDirectiveWhitespaces="true" %>
这个方案只有在支持jsp 2.1的web服务器上才可以使用，如Tomcat6。