action="#{languageFrom.showChoice}": Target Unreachable, identifier 'languageFrom' resolved to n

概述package yingServlet;  import javax.faces.bean.ManagedBean;  //记得不是import javax.annotation.ManagedBean;    @ManagedBean  public class LanguageForm { private String language ; public String getLanguage( package yingServlet; 


import javax.faces.bean.ManagedBean;  //记得不是import javax.annotation.ManagedBean;    @ManagedBean  public class LanguageForm { private String language ; public String getLanguage() { return language; } public voID setLanguage(String language) { this.language = language.trim() ;    }   public String showChoice() {  if (isMissing(language)) {  return "missing-language" ;  }  else if (language.equalsIgnoreCase("Java") || language.equalsIgnoreCase("Groovy")) {  return "good-language" ;  }  else {  return "bad-language" ;  } }  private boolean isMissing(String value) {  return (value == null) || value.trim().isEmpty() ;  } } 总结

以上是内存溢出为你收集整理的action="#{languageFrom.showChoice}": Target Unreachable, identifier 'languageFrom' resolved to null全部内容，希望文章能够帮你解决action="#{languageFrom.showChoice}": Target Unreachable, identifier 'languageFrom' resolved to null所遇到的程序开发问题。

如果觉得内存溢出网站内容还不错，欢迎将内存溢出网站推荐给程序员好友。