通过cxf提供rest服务

rest接口

 

import javax.ws.rs.DELETE;
import javax.ws.rs.GET;
import javax.ws.rs.POST;
import javax.ws.rs.PUT;
import javax.ws.rs.Path;
import javax.ws.rs.PathParam;
import javax.ws.rs.QueryParam;

import com.zyn.ssh.pojo.Teacher;
import com.zyn.ssh.service.rest.base.ListData;
import com.zyn.ssh.service.rest.base.PageData;
import com.zyn.ssh.service.rest.base.SimpleData;
import com.zyn.ssh.service.rest.base.SingleData;

@Path("")
public interface TeacherResource {
	
	@Path("/")
	@GET
	public ListData<Teacher> listTeachers();
	
	@Path("/{pageNo}/{pageSize}")
	@GET
	public PageData<Teacher> listTeachersByPage(@PathParam("pageNo")int pageNo,@PathParam("pageSize")int pageSize);
	
	@Path("/")
	@POST
	public SingleData<Teacher> addTeacher(@QueryParam("name") String name);
	
	@Path("/{id}")
	@DELETE
	public SimpleData<String> deleteTeacher(@PathParam("id") int id);
	
	@Path("/{id}")
	@PUT
	public SingleData<Teacher> updateTeacher(@PathParam("id")int id,@QueryParam("name") String name);
	
	@Path("/{id}")
	@GET
	public SingleData<Teacher> getTeacher(@PathParam("id") int id);
}

 

 rest接口实现类

 

public class TeacherResourceImpl implements TeacherResource {
	@Resource(name = "teacherService")
	private TeacherService teacherService;

	public ListData<Teacher> listTeachers() {
		ListData<Teacher> listData = new ListData<Teacher>();
		try {
			RetdObj<List<Teacher>> ret = this.teacherService.getAll();
			listData.setData(ret.getRealObj());
			System.out.println(ret.getRealObj().size());
			listData.setCode(RespCode.valueOf(ret.getCode()));
		} catch (Exception e) {
			listData.setCode(RespCode.EX_APP);
			e.printStackTrace();
		}
		return listData;
	}

	public PageData<Teacher> listTeachersByPage(int pageNo, int pageSize) {
		PageData<Teacher> pageData = new PageData<Teacher>();
		Page<Teacher> page = new Page<Teacher>();
		page.setPageNo(pageNo);
		page.setPageSize(pageSize);
		try {
			RetdObj<Page<Teacher>> ret = this.teacherService
					.findAllByPage(page);
			pageData.setData(ret.getRealObj().getResult());
			pageData.setPageinfo(CommonUtils.setPageInfoFromPage(ret
					.getRealObj()));
			pageData.setCode(RespCode.valueOf(ret.getCode()));
		} catch (Exception e) {
			pageData.setCode(RespCode.EX_APP);
			e.printStackTrace();
		}
		return pageData;
	}

	public SingleData<Teacher> addTeacher(String name) {
		SingleData<Teacher> singleData = new SingleData<Teacher>();
		if ("".equals(name)) {
			singleData.setCode(RespCode.EX_PARAM);
			return singleData;
		}
		Teacher teacher = new Teacher(name);
		try {
			this.teacherService.save(teacher);
			singleData.setCode(RespCode.PASS_OK);
			singleData.setData(teacher);
		} catch (Exception e) {
			e.printStackTrace();
			singleData.setCode(RespCode.EX_APP);
		}
		return singleData;
	}

	public SimpleData<String> deleteTeacher(int id) {
		SimpleData<String> simpleData = new SimpleData<String>();
		try {
			this.teacherService.delete(id);
			simpleData.setCode(RespCode.PASS_OK);
		} catch (Exception e) {
			e.printStackTrace();
			simpleData.setCode(RespCode.EX_APP);
		}
		return simpleData;
	}

	public SingleData<Teacher> updateTeacher(int id, String name) {
		SingleData<Teacher> singleData = new SingleData<Teacher>();
		if ("".equals(name)) {
			singleData.setCode(RespCode.EX_PARAM);
			return singleData;
		}
		try {
			Teacher teacher = this.teacherService.findById(id).getRealObj();
			if (teacher == null) {
				singleData.setCode(RespCode.PASS_NODATA);
			} else {
				teacher.setName(name);
				this.teacherService.update(teacher);
				singleData.setCode(RespCode.PASS_OK);
				singleData.setData(teacher);
			}
		} catch (Exception e) {
			e.printStackTrace();
			singleData.setCode(RespCode.EX_APP);
		}
		return singleData;
	}

	public SingleData<Teacher> getTeacher(int id) {
		SingleData<Teacher> singleData = new SingleData<Teacher>();
		try{
			RetdObj<Teacher> ret = this.teacherService.findById(id);
			singleData.setCode(RespCode.valueOf(ret.getCode()));
			singleData.setData(ret.getRealObj());
		}catch(Exception e){
			singleData.setCode(RespCode.EX_APP);
			e.printStackTrace();
		}
		return singleData;
	}

}

 

 返回简单对象，基本类型包装类：

 

@XmlRootElement(name = "base")
public class BaseRespObj implements Serializable {
	private static final long serialVersionUID = -3197616622643404121L;

	@XmlElement(name = "infocode")
	private RespCode respCode;

	public BaseRespObj() {
		this.setCode(RespCode.NODEFINE);
	}

	public void setCode(RespCode retdCodeType) {
		this.respCode = retdCodeType;
	}

	public int getCode() {
		return respCode.getCode();
	}
}

 

 

@XmlRootElement
@XmlAccessorType(XmlAccessType.FIELD)
public class SimpleData<T> extends BaseRespObj{
	
	@XmlElement
	private T result;

	public T getResult() {
		return result;
	}

	public void setResult(T result) {
		this.result = result;
	}
}

 返回单一实体对象包装类

 

@SuppressWarnings("serial")
@XmlAccessorType(XmlAccessType.FIELD)
@XmlRootElement
@XmlSeeAlso(value={Teacher.class})
public class SingleData<RealObject> extends BaseRespObj{

	@XmlElement
	private RealObject data;

	public RealObject getData() {
		return data;
	}

	public void setData(RealObject data) {
		this.data = data;
	}

	
}

 

 返回list集合包装类

 

@SuppressWarnings("serial")
@XmlAccessorType(XmlAccessType.FIELD)
@XmlSeeAlso(value={Teacher.class})
@XmlRootElement
public class ListData<T> extends BaseRespObj{
	
	@XmlElement
	private List<T> data;

	public List<T> getData() {
		return data;
	}

	public void setData(List<T> data) {
		this.data = data;
	}
	
}

 

 返回page分页数据包装类

 

@XmlRootElement
@XmlAccessorType(XmlAccessType.FIELD)
@XmlType(propOrder = { "totalResults", "currentPage", "onePageSize",
		"firstResult", "nextPage", "previousPage", "totalPage" })
public class PageRespObj implements Serializable {

	private static final long serialVersionUID = -2940983877096774934L;

	private int currentPage; // 当前页

	private int firstResult; // 当前页的起始记录

	private long totalResults; // 总共记录数

	private int onePageSize; // 每页的数量

	private long totalPage; // 总共多少页

	private int nextPage; // 下一页

	private int previousPage; // 上一页

	public PageRespObj() {
	}

	public int getCurrentPage() {
		return currentPage;
	}

	public void setCurrentPage(int currentPage) {
		this.currentPage = currentPage;
	}

	public int getFirstResult() {
		return firstResult;
	}

	public void setFirstResult(int firstResult) {
		this.firstResult = firstResult;
	}

	public long getTotalResults() {
		return totalResults;
	}

	public void setTotalResults(long totalResults) {
		this.totalResults = totalResults;
	}

	public int getOnePageSize() {
		return onePageSize;
	}

	public void setOnePageSize(int onePageSize) {
		this.onePageSize = onePageSize;
	}

	public long getTotalPage() {
		return totalPage;
	}

	public void setTotalPage(long totalPage) {
		this.totalPage = totalPage;
	}

	public int getNextPage() {
		return nextPage;
	}

	public void setNextPage(int nextPage) {
		this.nextPage = nextPage;
	}

	public int getPreviousPage() {
		return previousPage;
	}

	public void setPreviousPage(int previousPage) {
		this.previousPage = previousPage;
	}

}

 

 

@XmlAccessorType(XmlAccessType.FIELD)
@XmlRootElement
@XmlSeeAlso(value={Teacher.class})
public class PageData<T> extends BaseRespObj{
	@XmlElement
	private PageRespObj pageinfo;
	
	@XmlElementWrapper(name="pageData")
	public List<T> data;

	public PageRespObj getPageinfo() {
		return pageinfo;
	}

	public void setPageinfo(PageRespObj pageinfo) {
		this.pageinfo = pageinfo;
	}

	public List<T> getData() {
		return data;
	}

	public void setData(List<T> data) {
		this.data = data;
	}
}

 返回的系统状态码

@XmlRootElement @XmlEnum
public enum RespCode 
{
    @XmlEnumValue("0")NODEFINE(0), 
    @XmlEnumValue("200")PASS_OK(200), 
    @XmlEnumValue("201")PASS_NODATA(201), 
    @XmlEnumValue("500")EX_PARAM(500),
    @XmlEnumValue("501")EX_APP(501), 
    @XmlEnumValue("502")EX_AUTH(502),
    @XmlEnumValue("600")EX_UNKNOWN(600);
    private int code;

    RespCode(int code) 
    {
        this.code = code;
    }

    public int getCode() 
    {
        return this.code;
    }
    
    public static RespCode valueOf(int code) 
    {
    	switch(code) 
    	{
    	case 0 :
    		return NODEFINE;
    	case 200 :
    		return PASS_OK;
    	case 201 :
    		return PASS_NODATA;
    	case 500 :
    		return EX_PARAM;
    	case 501 :
    		return EX_APP;
    	case 502 :
    		return EX_AUTH;
    	case 600 :
    		return EX_UNKNOWN;
    	default :
    		return null;
    	}
    }
    
}

将service层返回的page数据封装成rest返回类型帮助类

public class CommonUtils {
	/**
	 * 
	 * @param page
	 * @return
	 */
	@SuppressWarnings("rawtypes")
	public static PageRespObj setPageInfoFromPage(Page page) {
		int currentPage = 0;
		int onePageSize = 0;
		long totalResults = 0;
		int firstResult = 0;
		int nextPage = 0;
		int previousPage = 0;
		long totalPage = 0;

		if (page != null) {
			currentPage = page.getPageNo();
			onePageSize = page.getPageSize();
			totalResults = page.getTotalCount();
			firstResult = page.getFirst();
			nextPage = page.getNextPage();
			previousPage = page.getPrePage();
			totalPage = page.getTotalPages();

			PageRespObj obj = new PageRespObj();
			obj.setCurrentPage(currentPage);
			obj.setOnePageSize(onePageSize);
			obj.setTotalResults(totalResults);
			obj.setFirstResult(firstResult);
			obj.setNextPage(nextPage);
			obj.setPreviousPage(previousPage);
			obj.setTotalPage(totalPage);

			return obj;
		} else {
			return null;
		}
	}
}

 配置cxf

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:jaxws="http://cxf.apache.org/jaxws"
	xmlns:jaxrs="http://cxf.apache.org/jaxrs" xmlns:cxf="http://cxf.apache.org/core"
	xsi:schemaLocation="
	http://cxf.apache.org/core http://cxf.apache.org/schemas/core.xsd
	http://www.springframework.org/schema/beans 
	http://www.springframework.org/schema/beans/spring-beans.xsd
	http://cxf.apache.org/jaxws http://cxf.apache.org/schemas/jaxws.xsd
	http://cxf.apache.org/jaxrs http://cxf.apache.org/schemas/jaxrs.xsd">
	<import resource="classpath:META-INF/cxf/cxf.xml" />
	<import resource="classpath:META-INF/cxf/cxf-servlet.xml" />
	<cxf:bus>
		<cxf:inInterceptors>
			<bean class="org.apache.cxf.interceptor.LoggingInInterceptor" />
		</cxf:inInterceptors>
	</cxf:bus>
	<jaxrs:server id="teacherRestResource" address="/teachers">
		<jaxrs:extensionMappings>
			<entry key="json" value="application/json" />
			<entry key="xml" value="application/xml" />
		</jaxrs:extensionMappings>
		<jaxrs:serviceBeans>
			<bean class="com.zyn.ssh.service.rest.impl.TeacherResourceImpl" />
		</jaxrs:serviceBeans>
	</jaxrs:server>
</beans>