Google Guice 依赖注入形式
Google Guice 依赖注入方式
Google Guice有三种依赖注入方式。
一。Field注入
package com.template.guice; import com.google.inject.Inject; /** * Created by IntelliJ IDEA. * User: Zhong Gang * Date: 11-8-2 * Time: 下午9:39 */ public class CommentServiceImpl implements CommentService { @Inject private CommentDao commentDao; @Override public void comment() { commentDao.comment("This is a comment message!"); } }
二。Constructor注入
package com.template.guice; import com.google.inject.Inject; /** * Created by IntelliJ IDEA. * User: Zhong Gang * Date: 11-8-2 * Time: 下午9:39 */ public class CommentServiceImpl implements CommentService { private CommentDao commentDao; @Inject public CommentServiceImpl(CommentDao commentDao) { this.commentDao = commentDao; } @Override public void comment() { commentDao.comment("This is a comment message!"); } }
三。Setter注入
package com.template.guice; import com.google.inject.Inject; /** * Created by IntelliJ IDEA. * User: Zhong Gang * Date: 11-8-2 * Time: 下午9:39 */ public class CommentServiceImpl implements CommentService { private CommentDao commentDao; @Override public void comment() { commentDao.comment("This is a comment message!"); } @Inject public void setCommentDao(CommentDao commentDao) { this.commentDao = commentDao; } }