我正在尝试构建一个简单的 java spring 项目，我进行了设置，其中包含我的 hibernate .hbm 映射、与每个映射一起使用的 POJO 以及一个如下所示的 SimpleFormController 类:
package com.jr.user.controller;
import org.springframework.web.portlet.mvc.SimpleFormController;
public class RegisterNewUser extends SimpleFormController{
}
如您所见，它是空的，但是当我尝试构建它时，出现以下错误:
BUILD FAILED C:\Users\xxxxxxxxxxxxx\Work\Online Racing League\build.xml:45: Unable to find a javac compiler; com.sun.tools.javac.Main is not on the classpath. Perhaps JAVA_HOME does not point to the JDK. It is currently set
to "C:\Program Files (x86)\Java\jre6"
Total time: 237 milliseconds
此外，奇怪的是上面代码中的包行以红色下划线突出显示，表示语法或代码错误，当我将鼠标悬停到该行时，这就是它所说的:
The type javax.portlet.PortletContext cannot be resolved. It is indirectly referenced from required .class files
我的 build.xml 如下所示:
<?xml version="1.0"?>
<project name="Online Racing League" basedir="." default="usage">
<property file="build.properties"/>
<property name="src.dir" value="src"/>
<property name="web.dir" value="war"/>
<property name="build.dir" value="${web.dir}/WEB-INF/classes"/>
<property name="name" value="Online Racing League"/>
<path id="master-classpath">
<fileset dir="${web.dir}/WEB-INF/lib">
<include name="*.jar"/>
</fileset>
<!-- We need the servlet API classes: -->
<!-- * for Tomcat 5/6 use servlet-api.jar -->
<!-- * for other app servers - check the docs -->
<fileset dir="${appserver.lib}">
<include name="servlet*.jar"/>
</fileset>
<pathelement path="${build.dir}"/>
</path>
<target name="usage">
<echo message=""/>
<echo message="${name} build file"/>
<echo message="-----------------------------------"/>
<echo message=""/>
<echo message="Available targets are:"/>
<echo message=""/>
<echo message="build --> Build the application"/>
<echo message="deploy --> Deploy application as directory"/>
<echo message="deploywar --> Deploy application as a WAR file"/>
<echo message="install --> Install application in Tomcat"/>
<echo message="reload --> Reload application in Tomcat"/>
<echo message="start --> Start Tomcat application"/>
<echo message="stop --> Stop Tomcat application"/>
<echo message="list --> List Tomcat applications"/>
<echo message=""/>
</target>
<target name="build" description="Compile main source tree java files">
<mkdir dir="${build.dir}"/>
<javac destdir="${build.dir}" source="1.5" target="1.5" debug="true"
deprecation="false" optimize="false" failonerror="true">
<src path="${src.dir}"/>
<classpath refid="master-classpath"/>
</javac>
</target>
<target name="deploy" depends="build" description="Deploy application">
<copy todir="${deploy.path}/${name}" preservelastmodified="true">
<fileset dir="${web.dir}">
<include name="**/*.*"/>
</fileset>
</copy>
</target>
<target name="deploywar" depends="build" description="Deploy application as a WAR file">
<war destfile="${deploy.path}/${name}.war"
webxml="${web.dir}/WEB-INF/web.xml">
<fileset dir="${web.dir}">
<include name="**/*.*"/>
</fileset>
</war>
<copy todir="${deploy.path}" preservelastmodified="true">
<fileset dir=".">
<include name="*.war"/>
</fileset>
</copy>
</target>
<!-- ============================================================== -->
<!-- Tomcat tasks - remove these if you don't have Tomcat installed -->
<!-- ============================================================== -->
<path id="catalina-ant-classpath">
<!-- We need the Catalina jars for Tomcat -->
<!-- * for other app servers - check the docs -->
<fileset dir="${appserver.lib}">
<include name="catalina-ant.jar"/>
</fileset>
</path>
<taskdef name="install" classname="org.apache.catalina.ant.DeployTask">
<classpath refid="catalina-ant-classpath"/>
</taskdef>
<taskdef name="reload" classname="org.apache.catalina.ant.ReloadTask">
<classpath refid="catalina-ant-classpath"/>
</taskdef>
<taskdef name="list" classname="org.apache.catalina.ant.ListTask">
<classpath refid="catalina-ant-classpath"/>
</taskdef>
<taskdef name="start" classname="org.apache.catalina.ant.StartTask">
<classpath refid="catalina-ant-classpath"/>
</taskdef>
<taskdef name="stop" classname="org.apache.catalina.ant.StopTask">
<classpath refid="catalina-ant-classpath"/>
</taskdef>
<target name="install" description="Install application in Tomcat">
<install url="${tomcat.manager.url}"
username="${tomcat.manager.username}"
password="${tomcat.manager.password}"
path="/${name}"
war="${name}"/>
</target>
<target name="reload" description="Reload application in Tomcat">
<reload url="${tomcat.manager.url}"
username="${tomcat.manager.username}"
password="${tomcat.manager.password}"
path="/${name}"/>
</target>
<target name="start" description="Start Tomcat application">
<start url="${tomcat.manager.url}"
username="${tomcat.manager.username}"
password="${tomcat.manager.password}"
path="/${name}"/>
</target>
<target name="stop" description="Stop Tomcat application">
<stop url="${tomcat.manager.url}"
username="${tomcat.manager.username}"
password="${tomcat.manager.password}"
path="/${name}"/>
</target>
<target name="list" description="List Tomcat applications">
<list url="${tomcat.manager.url}"
username="${tomcat.manager.username}"
password="${tomcat.manager.password}"/>
</target>
<!-- End Tomcat tasks -->
</project>
我的构建属性如下所示:
# Ant properties for building the springapp
appserver.home=C:/Program Files/Apache Software Foundation/Tomcat 7.0
# for Tomcat 5 use $appserver.home}/server/lib
# for Tomcat 6 use $appserver.home}/lib
appserver.lib=${appserver.home}/lib/
deploy.path=${appserver.home}/webapps
tomcat.manager.url=http://localhost:8080/manager
tomcat.manager.username=
tomcat.manager.password=
奇怪的是，如果我不扩展 SimpleFormController 。错误:
The type javax.portlet.PortletContext cannot be resolved. It is indirectly referenced from required .class files
消失了，但我仍然无法构建它，并出现完全相同的错误。
我目前使用 eclipse IDE 和 tomcat 7
我有运行 spring 和 hibernate 所需的必要库，所以我不太清楚问题出在哪里。
我检查了 JAVA 主路径，我的 java 已正确安装在那里。
提前致谢。
最佳答案
将您的JAVA_HOME设置为JDK，例如c:\Program Files\Java\jdk1.6.0_20\
关于java - 无法构建新的java spring项目，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/4722873/