5

我正在尝试编写一个使用 Thrift 的基本 Java 应用程序。我缺少的是一个工作 jar 文件。

我已经从官网下载页面下载了 0.8.0 gz 版本的 thrift，并自己创建了 jar 包（jar cf thrift-0.8.0.jar src/org）。我已将新的 jar 文件移动到我的项目目录中。然后，我手动将此 jar 文件添加到项目中 - 我在 NetBeans IDE 中工作。一切似乎都应该工作，但它没有 - 在我想使用节俭库的任何地方都会出现红色错误消息。这是我的一段代码：

package com.blogspot.symfonyworld.thrift;

import com.blogspot.symfonyworld.thrift.server.MainService;
import org.apache.thrift.TException;

public class MainServiceHandler implements MainService.Iface {

  @Override
    public int add(int n1, int n2) throws TException {
        return n1 + n2;
    }

    @Override
    public int sub(int n1, int n2) throws TException {
        return n1 + n2;
    }

}

和另一个文件：

/**
 * Autogenerated by Thrift Compiler (0.8.0)
 *
 * DO NOT EDIT UNLESS YOU ARE SURE THAT YOU KNOW WHAT YOU ARE DOING
 *  @generated
 */
package com.blogspot.symfonyworld.thrift.server;

import org.apache.thrift.scheme.IScheme;
import org.apache.thrift.scheme.SchemeFactory;
import org.apache.thrift.scheme.StandardScheme;

import org.apache.thrift.scheme.TupleScheme;
import org.apache.thrift.protocol.TTupleProtocol;
import java.util.List;
import java.util.ArrayList;
import java.util.Map;
import java.util.HashMap;
import java.util.EnumMap;
import java.util.Set;
import java.util.HashSet;
import java.util.EnumSet;
import java.util.Collections;
import java.util.BitSet;
import java.nio.ByteBuffer;
import java.util.Arrays;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class MainService {

  public interface Iface {

    public int add(int n1, int n2) throws org.apache.thrift.TException;

    public int sub(int n1, int n2) throws org.apache.thrift.TException;

  }

  public interface AsyncIface {

    public void add(int n1, int n2, org.apache.thrift.async.AsyncMethodCallback<AsyncClient.add_call> resultHandler) throws org.apache.thrift.TException;

    public void sub(int n1, int n2, org.apache.thrift.async.AsyncMethodCallback<AsyncClient.sub_call> resultHandler) throws org.apache.thrift.TException;

  }

当我运行构建时，我收到以下错误：

ant -f /var/www/laughing-thrift-duck jar
init:
Deleting: /var/www/laughing-thrift-duck/build/built-jar.properties
deps-jar:
Updating property file: /var/www/laughing-thrift-duck/build/built-jar.properties
Compiling 2 source files to /var/www/laughing-thrift-duck/build/classes
/var/www/laughing-thrift-duck/src/com/blogspot/symfonyworld/thrift/MainServiceHandler.java:4: package org.apache.thrift does not exist
import org.apache.thrift.TException;
/var/www/laughing-thrift-duck/src/com/blogspot/symfonyworld/thrift/server/MainService.java:9: package org.apache.thrift.scheme does not exist
import org.apache.thrift.scheme.IScheme;
/var/www/laughing-thrift-duck/src/com/blogspot/symfonyworld/thrift/server/MainService.java:10: package org.apache.thrift.scheme does not exist
import org.apache.thrift.scheme.SchemeFactory;
/var/www/laughing-thrift-duck/src/com/blogspot/symfonyworld/thrift/server/MainService.java:11: package org.apache.thrift.scheme does not exist
import org.apache.thrift.scheme.StandardScheme;
/var/www/laughing-thrift-duck/src/com/blogspot/symfonyworld/thrift/server/MainService.java:13: package org.apache.thrift.scheme does not exist
import org.apache.thrift.scheme.TupleScheme;
/var/www/laughing-thrift-duck/src/com/blogspot/symfonyworld/thrift/server/MainService.java:14: package org.apache.thrift.protocol does not exist
import org.apache.thrift.protocol.TTupleProtocol;
# and many many more...

主要问题是：包 org.apache.thrift 不存在- 怎么会？！

有人可以指出我在将自定义 jar 导入我的项目时做错了什么吗？我认为这与节俭无关，而是与一般的进口罐子有关。

4

2 回答 2

9

我已经从官网下载页面下载了 0.8.0 gz 版本的 thrift 并自己创建了 jar 存档（jar cf thrift-0.8.0.jar src/org）

你为什么要创建自己的罐子？为什么你用源文件创建它？jar 库必须至少包含可供使用的字节码类。

你必须让 thrift 自己编译成一个 jar，然后使用它：

  • 浏览到/lib/java
  • ant在终端运行
  • 检查构建文件夹，你会看到一个.jar
  • 使用那个
于 2013-03-15T15:18:42.337 回答
0

When you use the command jar cf thrift-0.8.0.jar src/org to create the jar file, the classes for the org package (and under it) are stored in the src/org instead of org, so Java can't find it. Try to use this command instead jar cf thrift-0.8.0.jar -C src org, which should produce the correct structure.

You may verify it by running jar tf thrift-0.8.0.jar and see the content.

于 2013-03-15T15:19:13.887 回答