java - 简单测试中的 NoClassDefFoundError

Question

我想使用 moo 进行 dto- 实体转换。但测试它我得到这个异常

    Exception in thread "main" java.lang.NoClassDefFoundError: org/mvel2/PropertyAccessException
    at com.codiform.moo.configuration.Configuration.getTranslator(Configuration.java:62)
    at com.codiform.moo.session.TranslationSession.getTranslator(TranslationSession.java:131)
    at com.codiform.moo.session.TranslationSession.translate(TranslationSession.java:122)
    at com.codiform.moo.session.TranslationSession.getTranslation(TranslationSession.java:64)
    at com.codiform.moo.curry.Translate.from(Translate.java:63)
    at Main.main(Main.java:15)
Caused by: java.lang.ClassNotFoundException: org.mvel2.PropertyAccessException
    at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
    ... 6 more

是不是因为我做错了什么？这是我的代码:

import com.codiform.moo.curry.Translate;


public class Main {

    /**
     * @param args
     */
    public static void main(String[] args) {
        // TODO Auto-generated method stub
Guld guld1=new Guld("string from guld", "muck around", 5);
GuldDTO guld1DTO;
GuldDTO testclassload = new GuldDTO("ruks","halim",3);

guld1DTO=Translate.to(GuldDTO.class).from(guld1);
        //Beca beca1 = new Beca ()

System.out.println(guld1);
System.out.println(guld1DTO);
    }

}

<小时/>

public class Guld {

    private String fielk1;
    private String rupo;
    private Integer higs;
    public Guld(){

    }
    public Guld(String fielk1, String rupo, Integer higs) {

        this.fielk1 = fielk1;
        this.rupo = rupo;
        this.higs = higs;
    }
    public String getFielk1() {
        return fielk1;
    }
    public void setFielk1(String fielk1) {
        this.fielk1 = fielk1;
    }
    public String getRupo() {
        return rupo;
    }
    public void setRupo(String rupo) {
        this.rupo = rupo;
    }
    public Integer getHigs() {
        return higs;
    }
    public void setHigs(Integer higs) {
        this.higs = higs;
    }


}

<小时/>

public class GuldDTO {
    private String fielk1;
    private String rupo;
    private Integer higs;
    public GuldDTO (){

    }
    public GuldDTO(String fielk1, String rupo, Integer higs) {

        this.fielk1 = fielk1;
        this.rupo = rupo;
        this.higs = higs;
    }
    public String getFielk1() {
        return fielk1;
    }
    public void setFielk1(String fielk1) {
        this.fielk1 = fielk1;
    }
    public String getRupo() {
        return rupo;
    }
    public void setRupo(String rupo) {
        this.rupo = rupo;
    }
    public Integer getHigs() {
        return higs;
    }
    public void setHigs(Integer higs) {
        this.higs = higs;
    }

}

如果我需要提供任何其他详细信息，请告知。 [显然我无法通过检查代码与文本比率的 stackoverflow 过滤器。][完成]

Answer 1

ClassNotFoundException异常表示类缺少为该类添加库并再次运行。 首先检查您的应用程序是否有此类，否则添加 mvel lib。

可访问:http://grepcode.com/snapshot/repo1.maven.org/maven2/org.mvel/mvel2/2.1.4.Final/