2

尝试运行 Java 示例应用程序时出现异常异常。

下面是来自控制台的堆栈跟踪：

    $./init-og-examples-db.sh
        Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/tools/ant/Task
    at java.lang.ClassLoader.defineClass1(Native Method)
    at java.lang.ClassLoader.defineClass(ClassLoader.java:792)
    at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
    at java.net.URLClassLoader.defineClass(URLClassLoader.java:449)
    at java.net.URLClassLoader.access$100(URLClassLoader.java:71)
    at java.net.URLClassLoader$1.run(URLClassLoader.java:361)
    at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
    at sun.launcher.LauncherHelper.checkAndLoadMain(LauncherHelper.java:482)
Caused by: java.lang.ClassNotFoundException: org.apache.tools.ant.Task
    at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
    at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
    ... 13 more
Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/tools/ant/Task
    at java.lang.ClassLoader.defineClass1(Native Method)
    at java.lang.ClassLoader.defineClass(ClassLoader.java:792)
    at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
    at java.net.URLClassLoader.defineClass(URLClassLoader.java:449)
    at java.net.URLClassLoader.access$100(URLClassLoader.java:71)
    at java.net.URLClassLoader$1.run(URLClassLoader.java:361)
    at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
    at sun.launcher.LauncherHelper.checkAndLoadMain(LauncherHelper.java:482)
Caused by: java.lang.ClassNotFoundException: org.apache.tools.ant.Task
    at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
    at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
    ... 13 more
### Adding example data
Error: Could not find or load main class com.opengamma.examples.tool.ExampleDatabasePopulator
### Completed

我对 Java 比较陌生，所以我不确定为什么找不到该类，因为该类确实存在：

someone@yourbox:~/work/dev/java/OG-Platform/projects/OG-Examples/scripts$ find ../../.. -type f -name 'ExampleDatabasePopulator.*'
../../../projects/OG-Examples/bin/com/opengamma/examples/tool/ExampleDatabasePopulator.class
../../../projects/OG-Examples/build/classes/com/opengamma/examples/tool/ExampleDatabasePopulator.class
../../../projects/OG-Examples/src/main/java/com/opengamma/examples/tool/ExampleDatabasePopulator.java
../../../projects/OG-BloombergExample/bin/com/opengamma/bloombergexample/tool/ExampleDatabasePopulator.class
../../../projects/OG-BloombergExample/build/classes/com/opengamma/bloombergexample/tool/ExampleDatabasePopulator.class
../../../projects/OG-BloombergExample/src/main/java/com/opengamma/bloombergexample/tool/ExampleDatabasePopulator.java

谁能帮我解决这个问题？

[更新]

我做了以下事情：

1.在我的机器上删除并手动安装ant

2.搜索包含单词Task的.jar文件（试图找到实现Task类的文件）

grep -lri Task --include=*.jar /usr/local/apache-ant-1.9.1
/usr/local/apache-ant-1.9.1/lib/ant-netrexx.jar
/usr/local/apache-ant-1.9.1/lib/ant-jdepend.jar
/usr/local/apache-ant-1.9.1/lib/ant-javamail.jar
/usr/local/apache-ant-1.9.1/lib/ant-junit.jar
/usr/local/apache-ant-1.9.1/lib/ant-jsch.jar
/usr/local/apache-ant-1.9.1/lib/ant-apache-xalan2.jar
/usr/local/apache-ant-1.9.1/lib/ant-junit4.jar
/usr/local/apache-ant-1.9.1/lib/ant-jmf.jar
/usr/local/apache-ant-1.9.1/lib/ant.jar
/usr/local/apache-ant-1.9.1/lib/ant-testutil.jar
/usr/local/apache-ant-1.9.1/lib/ant-jai.jar
/usr/local/apache-ant-1.9.1/lib/ant-commons-net.jar
/usr/local/apache-ant-1.9.1/lib/ant-antlr.jar
/usr/local/apache-ant-1.9.1/lib/ant-swing.jar

3.将相关文件夹添加到我的CLASSPATH

导出 CLASSPATH=$CLASSPATH:/usr/local/apache-ant-1.9.1/etc:/usr/local/apache-ant-1.9.1/lib

4.确保我拥有两者JAVA_HOME并ANT_HOME正确设置

echo $ANT_HOME
/usr/local/apache-ant-1.9.1
echo $JAVA_HOME
/usr/lib/jvm/java-7-oracle/jre

尽管如此，我还是得到了与以前完全相同的错误（即堆栈跟踪与上面的相同）。

[第二次更新]

这是我正在运行的脚本文件的内容：

#!/bin/sh

if [ ! -z "$JAVA_HOME" ]; then
  JAVA=$JAVA_HOME/bin/java
elif [ -x /opt/jdk1.6.0_16/bin/java ]; then
  JAVA=/opt/jdk1.6.0_16/bin/java
else
  # No JAVA_HOME, try to find java in the path
  JAVA=`which java 2>/dev/null`
  if [ ! -x "$JAVA" ]; then
    # No java executable in the path either
    echo "Error: Cannot find a JRE or JDK. Please set JAVA_HOME"
    exit 1
  fi
fi

if [ "`basename $0`" = "init-og-examples-db.sh" ] ; then
  cd `dirname $0`/.. #PLAT-1527
fi

CLASSPATH=config:og-examples.jar
for FILE in `ls -1 lib/*` ; do
  CLASSPATH=$CLASSPATH:$FILE
done

echo "### Creating empty database"

$JAVA  -cp "$CLASSPATH" \
  -Dlogback.configurationFile=jetty-logback.xml \
  com.opengamma.util.test.DbTool \
  -jdbcUrl jdbc:hsqldb:file:install/db/hsqldb/example-db \
  -database og-financial \
  -user "OpenGamma" \
  -password "OpenGamma" \
  -drop true \
  -create true \
  -createtables true \
  -dbscriptbasedir .

$JAVA  -cp "$CLASSPATH" \
  -Dlogback.configurationFile=jetty-logback.xml \
  com.opengamma.util.test.DbTool \
  -jdbcUrl jdbc:hsqldb:file:temp/hsqldb/og-fin-user \
  -database og-financial \
  -user "OpenGamma" \
  -password "OpenGamma" \
  -drop true \
  -create true \
  -createtables true \
  -dbscriptbasedir .

echo "### Adding example data"

$JAVA  -cp "$CLASSPATH" \
  -Xms512M \
  -Xmx1024M \
  -Dlogback.configurationFile=jetty-logback.xml \
  com.opengamma.examples.tool.ExampleDatabasePopulator

echo "### Completed"
4

3 回答 3

4

请注意，您CLASSPATH的执行无效。你的CLASSPATH必须是

export CLASSPATH=$CLASSPATH:/usr/local/apache-ant-1.9.1/etc:/usr/local/apache-ant-1.9.1/lib/ant-netrexx.jar:/usr/local/apache-ant-1.9.1/lib/ant-jdepend.jar:/usr/local/apache-ant-1.9.1/lib/ant-javamail.jar:/usr/local/apache-ant-1.9.1/lib/ant-junit.jar:/usr/local/apache-ant-1.9.1/lib/ant-jsch.jar:/usr/local/apache-ant-1.9.1/lib/ant-apache-xalan2.jar:/usr/local/apache-ant-1.9.1/lib/ant-junit4.jar:/usr/local/apache-ant-1.9.1/lib/ant-jmf.jar:/usr/local/apache-ant-1.9.1/lib/ant.jar:/usr/local/apache-ant-1.9.1/lib/ant-testutil.jar:/usr/local/apache-ant-1.9.1/lib/ant-jai.jar:/usr/local/apache-ant-1.9.1/lib/ant-commons-net.jar:/usr/local/apache-ant-1.9.1/lib/ant-antlr.jar:/usr/local/apache-ant-1.9.1/lib/ant-swing.jar

如果您仅命名一个目录，.class则仅包含该目录中的文件。

.jar文件必须在 中明确命名，CLASSPATH因为它们不会自动包含在内。

于 2013-07-01T07:46:45.680 回答
1

ant罐子似乎不见了。您可以从这里下载它们并将它们下载到类路径中。

于 2013-06-27T23:18:59.617 回答
0

在某些情况下，通过:.在末尾添加 a 来工作。例如：

export CLASSPATH=$CLASSPATH:/usr/local/apache-ant-1.9.1/etc:/usr/local/apache-ant-1.9.1/lib/ant-netrexx.jar:.

于 2014-04-23T17:17:46.963 回答