Question

我试图获取应用程序的根路径，对于ex＆＃34; / myApp＆＃34;，但遗憾的是，它无法运行..

我怎样才能得到它？

我到目前为止试过..

package redb.main.modules.sample.view.overview.columns;

import java.io.Serializable;
import java.text.MessageFormat;

import javax.servlet.ServletContextEvent;
import javax.servlet.ServletContextListener;

import redb.main.core.model.Dev;
import redb.main.core.model.Sam;
import redb.main.core.model.SampleVisitor;
import redb.main.core.model.Sys;

public class AnalLinkResolver implements SampleVisitor, Serializable, ServletContextListener {

    private static final long serialVersionUID = 1L;
    private final String DANAL= "/anal/over?sRNo={0,number,#}";
    private final String SANAL= "/anal/overv?sRNo=S{0,number,#}";


    private String linkPattern;
    private String contextPath;
    private Integer id;

    public AnalLinkResolver() {

    }

    @Override
    public void visit(Sys s) {
        linkPattern = contextPath + SANAL;
        id = s.getRNo();
        System.out.println("contextpathis: " + contextPath);

    }

    @Override
    public void visit(Dev d) {
        linkPattern = contextPath + DANAL;
        id = d.getRNo();
    }

    public String resolveForSam(Sam sam) {
        sam.accept(this);
        return MessageFormat.format(linkPattern, id);
    }

    @Override
    public void contextInitialized(ServletContextEvent event) {
            contextPath = event.getServletContext().getContextPath().toString();
            System.out.println("PATHNY: " + contextPath);
     }

    @Override
    public void contextDestroyed(ServletContextEvent event) {
        //contextPath = event.getServletContext().getContextPath().toString();
        //System.out.println("PATHNY: " + contextPath);
    }

}

并在web.xml中添加：

<listener>
        <listener-class>
            redb.main.modules.sample.view.overview.columns.AnalLinkResolver</listener-class>
</listener>

我从contextInitialized方法打印了contextPath，但是没有从visit方法打印..我得到null .. 我应该怎么做才能获得根路径？对于ex＆＃34; / myApp＆＃34; ？

PS：我使用的是springmvc＆amp;我的申请中的检票口

Answer 1

WebApplication.get().getServletContext().getContextPath()

如何获取应用程序根路径

1 个答案: