添加包声明时无法创建 jar [英] unable to create jar when adding the package declaration

问题描述

我收到了一个非常简单的类，其中有一些文件夹可以像这样编译没有问题:

I received a very simple class with some folders that compiles like this without problems:

javac -classpath /home/DigestJavaLinux/classes DigestClass.java

在 classes 文件夹中，我有一个名为 OasisEMSecImp.class

In the classes folder i have one .class file called OasisEMSecImp.class

我如何需要导入类并在另一个项目中使用它的方法，该方法会生成一个摘要字符串供银行检查交易，并接收总数和其他参数.

How ever I need to import the class and use its method in another project, the method generates a digest string for the bank to check a transaction, and receives the total and other parameters.

如果我添加

包摘要类；

在课程开始时它不起作用，我收到错误:

to the begining of the class it does not work, i get the error:

digestclass/DigestClass.java:136: cannot find symbol
symbol  : class OasisEMSecImp
location: class DigestClass
        OasisEMSecImp digest= new OasisEMSecImp();
        ^
digestclass/DigestClass.java:136: cannot find symbol
symbol  : class OasisEMSecImp
location: class DigestClass
        OasisEMSecImp digest= new OasisEMSecImp();
                                  ^
2 errors

更新:这是文件.它在没有包声明的情况下编译:

UPDATE: This is the file. It compiles without the package declaration:

package digestclass;

import java.*;

class DigestClass {
    private String varMerchant;
    private String varStore;                    // Store ID
    private String varTerm;             // Term ID
    private String varTotal;            // Monto de Transaccion
    private String varCurrency;             // Codigo de Moneda
    private String varOrder_id;         // Order Id
    private String varDigest;                       // Valor de Digest


    public DigestClass(String varMerchant, String varStore, String varTerm,
            String varTotal, String varCurrency, String varOrder_id,
            String varDigest) {
        super();
        this.varMerchant = varMerchant;
        this.varStore = varStore;
        this.varTerm = varTerm;
        this.varTotal = varTotal;
        this.varCurrency = varCurrency;
        this.varOrder_id = varOrder_id;
        this.varDigest = varDigest;
    }

    public String generateDigest(){
        OasisEMSecImp digest= new OasisEMSecImp();
        varDigest = digest.getDigest(this.varTotal,this.varOrder_id,this.varMerchant,this.varStore,this.varTerm,this.varCurrency);
        return varDigest;
    }

}

为什么?如何解决这个问题?非常感谢您抽出宝贵时间.

Why ? how to fix this ? Thank you very much for your time.

推荐答案

这就是我所理解的问题的原因以及我为解决该问题所做的工作.

This is what i understand was the cause of the problem and what i did to go around it.

就像 John Skeet 指出的那样，我试图使用的类

Like John Skeet pointed out, the class i was trying to use

OasisEMSecImp

最初是在默认包中编译的，也就是说编译的时候声明

Was compiled originally in the default package, which means that when it was compiled, the declaration

包 example.package.OasisEMSecImp

package example.package.OasisEMSecImp

在课程开始时没有使用.因此，它不能从属于包的类中调用，也不能集成到我当前的项目中，该项目非常复杂，并且在每个类中都使用包声明.

At the beginning of the class was not used. As a consequence it can not be called from a class that does belongs to a package, and cant be integrated to my current project, which is pretty complex and uses packages declarations in every class.

解决方法是，我创建了一个新的非常简单的应用程序，它通过命令行工作，可以通过 exec 从我的应用程序中调用，例如:

The workaround was, i created a new and very simple application which works through command line and can be called from my application through exec, for example:

Process process = Runtime.getRuntime().exec("java " +
                                                    "-Djava.library.path=/home/ernesto/DigestJavaLinux/lib " +
                                                    "-classpath /home/ernesto/workspace/digestUserTest/bin:/home/ernesto/workspace/digestUserTest/lib/digestgenerator.jar: " +
                                                    "ARGUMENTS");

多亏了此链接

我希望这对某人有所帮助.并感谢您的帮助.

I hope this helps someone. And thank you for your help.

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