java - Apabila menulis paging dalam rangka kerja SSH, kelas paging tidak boleh disuntik ke dalam lapisan perkhidmatan
lapisan servis
@Service
public class AuthorAdminServiceImpl implements IAuthorAdminService {
@Resource
private IAuthorAdminDao iauthoradmindao;
@Resource
PageUntil<AuthorAdmin> pageUntil;
@Override
public PageUntil<AuthorAdmin> findByPage(int currentPage) {
pageUntil.setCurrentPage(currentPage);// 当前多少页
int pageSize = 3;
pageUntil.setPagesize(pageSize);// 最多显示多少记录
int totalCount = iauthoradmindao.findCount();// 数据库中所有的记录
pageUntil.setTotalCount(totalCount);
double tc = totalCount;
Double num = Math.ceil(tc / pageSize);// 页面显示的总页数=数据库的总记录数/最多显示多少记录
pageUntil.setTotalPage(num.intValue());
int begin = (currentPage - 1) * pageSize;// 当前页开头位置的索引
List<AuthorAdmin> list = iauthoradmindao.findByPage(begin, pageSize);
if(list==null){
System.out.println("list findByPage service error");}
pageUntil.setList(list);
return pageUntil;
}lapisan tindakan
public String listAuthorAdmin() {
PageUntil<AuthorAdmin> pageuntil = iauthoradminservice
.findByPage(currentPage);
ActionContext.getContext().getValueStack().push(pageuntil);
return "listSuccess";
}
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'authorAdminAction': Injection of resource dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'authorAdminServiceImpl': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: com.lcy.until.PageUntil com.lcy.service.author.admin.AuthorAdminServiceImpl.pageUntil; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No matching bean of type [com.lcy.until.PageUntil] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}
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Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'authorAdminServiceImpl': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: com.lcy.until.PageUntil com.lcy.service.author.admin.AuthorAdminServiceImpl.pageUntil; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No matching bean of type [com.lcy.until.PageUntil] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}
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Caused by: org.springframework.beans.factory.BeanCreationException: Could not autowire field: com.lcy.until.PageUntil com.lcy.service.author.admin.AuthorAdminServiceImpl.pageUntil; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No matching bean of type [com.lcy.until.PageUntil] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}
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Caused by: org.springframework.beans.factory.NoSuchBeanDefinitionException: No matching bean of type [com.lcy.until.PageUntil] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}
Sekiranya daripada menggunakan suntikan, cukup dengan menggunakan kaedah baru, kenapa?
