J2EE之wildfly 实践3 --DAS服务开发
wildfly 实践3 --DAS服务开发,此服务基于JPA对数据进行CURD管理
IDE Eclipse mars,所在机器 192.168.50.253
(转载请注明来源:cnblogs coder-fang)
- File->new ->maven project ,创建Maven工程,如图：
- 修改pom.xml文件:
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <groupId>com.sanjian.wildfly</groupId> <artifactId>ticket-agency-db</artifactId> <version>0.1</version> <packaging>ejb</packaging> <name>ticket-agency-db</name> <dependencies> <dependency> <groupId>org.jboss.logging</groupId> <artifactId>jboss-logging</artifactId> <version>3.1.4.GA</version> </dependency> <dependency> <groupId>javax</groupId> <artifactId>javaee-api</artifactId> <version>7.0</version> <scope>provided</scope> </dependency> <dependency> <groupId>com.fasterxml.jackson.core</groupId> <artifactId>jackson-core</artifactId> <version>2.8.1</version> </dependency> <dependency> <groupId>com.fasterxml.jackson.core</groupId> <artifactId>jackson-annotations</artifactId> <version>2.1.0</version> </dependency> </dependencies> <build> <finalName>${project.artifactId}</finalName> <plugins> <plugin> <groupId>org.wildfly.plugins</groupId> <artifactId>wildfly-maven-plugin</artifactId> <version>1.0.2.Final</version> <configuration> <filename>${project.build.finalName}.jar</filename> <hostname>192.168.50.123</hostname> <port>8080</port> <username>jboss</username> <password>123</password> </configuration> </plugin> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-compiler-plugin</artifactId> <version>3.1</version> <configuration> <source>1.8</source> <target>1.8</target> </configuration> </plugin> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-ejb-plugin</artifactId> <version>2.3</version> <configuration> <ejbVersion>3.2</ejbVersion> <generateClient>false</generateClient> </configuration> </plugin> </plugins> </build> </project>
- 在src/main/resources/META-INF下增加两个xml配置文件，如图：
- ejb-jar.xml配置如下:
<?xml version="1.0" encoding="UTF-8"?> <ejb-jar xmlns="http://xmlns.jcp.org/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" version="3.2"> <display-name>ticket-agency-db</display-name> <ejb-client-jar>ticket-agency-db.jar</ejb-client-jar> </ejb-jar>
- persistence.xml配置如下:
<?xml version="1.0" encoding="UTF-8"?> <persistence version="2.1" xmlns="http://xmlns.jcp.org/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/persistence http://xmlns.jcp.org/xml/ns/persistence/persistence_2_1.xsd"> <persistence-unit name="ticket-agency-db" transaction-type="JTA"> <jta-data-source>java:/XboMdtDS</jta-data-source> <class>com.sanjian.jpa.model.Patient</class> <class>com.sanjian.jpa.model.Site</class> <properties> <property name="hibernate.show_sql" value="true" /> </properties> </persistence-unit> </persistence>
注:本例中只对Patient表和Site表进行映射，所以class如上述所示
- 创建两个实体类com.sanjian.jpa.model.Patient,com.sanjian.jpa.model.Site.
- Patient代码片段如下:
@Entity @Table(name="patient") @NamedQuery(name="Patient.findAll", query="SELECT p FROM Patient p") public class Patient implements Serializable { private static final long serialVersionUID = 1L; @Id @GeneratedValue(strategy=GenerationType.IDENTITY) private String id; @Column(name="pat_birth") private String patBirth; @Column(name="pat_id") private String patId; @Column(name="pat_name") private String patName; @Column(name="pat_sex") private String patSex; @Column(name="pat_weight") private String patWeight; private String version; //bi-directional many-to-one association to Site @ManyToOne @JoinColumn(name="created_site") private Site site;
......setter and getter - Site代码片段如下：
@Entity @Table(name="site") @NamedQuery(name="Site.findAll", query="SELECT s FROM Site s") public class Site implements Serializable { private static final long serialVersionUID = 1L; @Id @GeneratedValue(strategy=GenerationType.IDENTITY) private long id; private int canresetmcode; private String contact; private String maccode; private String offreason; private String siteaddress;
...getter and setter - 右键此工程，执行maven-->update project,排除相关错误。
- 创建com.sanjian.jpa.model.dao.AbstractDao,代码如下:
View Code@TransactionAttribute(TransactionAttributeType.REQUIRED) public abstract class AbstractDao<T extends Serializable> implements Serializable { private final Class<T> clazz; @PersistenceContext private EntityManager em; public AbstractDao(Class<T> clazz) { this.clazz = clazz; } @TransactionAttribute(TransactionAttributeType.NOT_SUPPORTED) public long getCount() { return (Long)em.createQuery("select count("+ getCountField() +") from "+ getEntityName()+ " o").getSingleResult(); } public void delete(Object entityid) { em.remove(em.getReference(clazz, entityid)); } public T find(Object entityId) { return em.find(clazz, entityId); } public void save(Object entity) { em.persist(entity); } public void update(Object entity) { em.merge(entity); } @TransactionAttribute(TransactionAttributeType.NOT_SUPPORTED) public QueryResult<T> getScrollData( int firstindex, int maxresult, LinkedHashMap<String, String> orderby) { return getScrollData(firstindex,maxresult,null,null,orderby); } @TransactionAttribute(TransactionAttributeType.NOT_SUPPORTED) public QueryResult<T> getScrollData( int firstindex, int maxresult, String wherejpql, Object[] queryParams) { return getScrollData(firstindex,maxresult,wherejpql,queryParams,null); } @TransactionAttribute(TransactionAttributeType.NOT_SUPPORTED) public QueryResult<T> getScrollData(int firstindex, int maxresult) { return getScrollData(firstindex,maxresult,null,null,null); } @TransactionAttribute(TransactionAttributeType.NOT_SUPPORTED) public QueryResult<T> getScrollData() { return getScrollData(-1, -1); } @SuppressWarnings("unchecked") @TransactionAttribute(TransactionAttributeType.NOT_SUPPORTED) public QueryResult<T> getScrollData(int firstindex, int maxresult , String wherejpql, Object[] queryParams,LinkedHashMap<String, String> orderby) { QueryResult<T> qr = new QueryResult<T>(); String entityname = getEntityName(); Query query = em.createQuery("select o from "+ entityname+ " o "+(wherejpql==null? "": "where "+ wherejpql)+ buildOrderby(orderby)); setQueryParams(query, queryParams); if(firstindex!=-1 && maxresult!=-1) query.setFirstResult(firstindex).setMaxResults(maxresult); qr.setResultlist(query.getResultList()); query = em.createQuery("select count("+ getCountField()+ ") from "+ entityname+ " o "+(wherejpql==null? "": "where "+ wherejpql)); setQueryParams(query, queryParams); qr.setTotalrecord((Long)query.getSingleResult()); return qr; } protected void setQueryParams(Query query, Object[] queryParams){ if(queryParams!=null && queryParams.length>0){ for(int i=0; i<queryParams.length; i++){ query.setParameter(i+1, queryParams[i]); } } } protected String buildOrderby(LinkedHashMap<String, String> orderby){ StringBuffer orderbyql = new StringBuffer(""); if(orderby!=null && orderby.size()>0){ orderbyql.append(" order by "); for(String key : orderby.keySet()){ orderbyql.append("o.").append(key).append(" ").append(orderby.get(key)).append(","); } orderbyql.deleteCharAt(orderbyql.length()-1); } return orderbyql.toString(); } protected String getEntityName(){ String entityname = clazz.getSimpleName(); Entity entity = clazz.getAnnotation(Entity.class); if(entity.name()!=null && !"".equals(entity.name())){ entityname = entity.name(); } return entityname; } protected String getCountField(){ String out = "o"; try { PropertyDescriptor[] propertyDescriptors = Introspector.getBeanInfo(clazz).getPropertyDescriptors(); for(PropertyDescriptor propertydesc : propertyDescriptors){ Method method = propertydesc.getReadMethod(); if(method!=null && method.isAnnotationPresent(EmbeddedId.class)){ PropertyDescriptor[] ps = Introspector.getBeanInfo(propertydesc.getPropertyType()).getPropertyDescriptors(); out = "o."+ propertydesc.getName()+ "." + (!ps[1].getName().equals("class")? ps[1].getName(): ps[0].getName()); break; } } } catch (Exception e) { e.printStackTrace(); } return out; } }
- 创建com.sanjian.jpa.model.dao.QueryResult,代码如下:
View Code
public class QueryResult<T> implements Serializable{ /** * */ private static final long serialVersionUID = -4283264692574549712L; private List<T> resultlist; private Long totalrecord; /** * @return the resultlist */ public List<T> getResultlist() { return resultlist; } /** * @param resultlist the resultlist to set */ public void setResultlist(List<T> resultlist) { this.resultlist = resultlist; } /** * @return the totalrecord */ public Long getTotalrecord() { return totalrecord; } /** * @param totalrecord the totalrecord to set */ public void setTotalrecord(Long totalrecord) { this.totalrecord = totalrecord; } }
- 创建com.sanjian.jpa.model.dao.SiteDao,代码片段如下:
View Code
@Stateless public class SiteDao extends AbstractDao<Site>{ /** * */ private static final long serialVersionUID = 461138635288849346L; public SiteDao() { super(Site.class); // TODO Auto-generated constructor stub } }
注：PatientDao代码类似
- 右键工程->New->Session Bean：如图:
- SiteManager代码如下:
View Code
@Stateless @LocalBean public class SiteManager implements SiteManagerRemote { private static Logger logger = Logger.getLogger(SiteManager.class); @EJB SiteDao siteDao; @EJB PatientDao patientDao; /** * Default constructor. */ public SiteManager() { // TODO Auto-generated constructor stub } @Override public QueryResult<Site> listSites(int status) { QueryResult<Site> lst = null; try { lst = siteDao.getScrollData(0, 100, "status=?1", new Object[]{status}); } catch (Exception e) { // TODO: handle exception e.printStackTrace(); } return lst; } public SiteDao getSiteDao() { return siteDao; } public void setSiteDao(SiteDao siteDao) { this.siteDao = siteDao; } }
- 修改相关接口代码SiteManagerRemote,代码如下:
@Remote public interface SiteManagerRemote { QueryResult<Site> listSites(int status); }
- 至此，EJB服务接口编写完成，使用maven->update project 更新代码并修复错误。
- 发布设置，打开Run->run configuration,配置如下:
- 确保50.123机器服务已运行，点击上图中的运行，则此ejb即可发布至50.123上，console控制台代码片段如下:
View Code
[INFO] Building EJB ticket-agency-db with EJB version 3.2 [INFO] Building jar: E:\StudyCode\WorkSpace\ticket-agency\ticket-agency-db\target\ticket-agency-db.jar [INFO] [INFO] --- maven-install-plugin:2.4:install (default-install) @ ticket-agency-db --- [INFO] Installing E:\StudyCode\WorkSpace\ticket-agency\ticket-agency-db\target\ticket-agency-db.jar to E:\mavenrepo\com\sanjian\wildfly\ticket-agency-db\0.1\ticket-agency-db-0.1.jar [INFO] Installing E:\StudyCode\WorkSpace\ticket-agency\ticket-agency-db\pom.xml to E:\mavenrepo\com\sanjian\wildfly\ticket-agency-db\0.1\ticket-agency-db-0.1.pom [INFO] [INFO] >>> wildfly-maven-plugin:1.0.2.Final:deploy (default-cli) > package @ ticket-agency-db >>> [INFO] [INFO] --- maven-resources-plugin:2.6:resources (default-resources) @ ticket-agency-db --- [WARNING] Using platform encoding (UTF-8 actually) to copy filtered resources, i.e. build is platform dependent! [INFO] Copying 2 resources [INFO] [INFO] --- maven-compiler-plugin:3.1:compile (default-compile) @ ticket-agency-db --- [INFO] Nothing to compile - all classes are up to date [INFO] [INFO] --- maven-resources-plugin:2.6:testResources (default-testResources) @ ticket-agency-db --- [WARNING] Using platform encoding (UTF-8 actually) to copy filtered resources, i.e. build is platform dependent! [INFO] Copying 0 resource [INFO] [INFO] --- maven-compiler-plugin:3.1:testCompile (default-testCompile) @ ticket-agency-db --- [INFO] Nothing to compile - all classes are up to date [INFO] [INFO] --- maven-surefire-plugin:2.12.4:test (default-test) @ ticket-agency-db --- [INFO] Skipping execution of surefire because it has already been run for this configuration [INFO] [INFO] --- maven-ejb-plugin:2.3:ejb (default-ejb) @ ticket-agency-db --- [INFO] Building EJB ticket-agency-db with EJB version 3.2 [INFO] Building jar: E:\StudyCode\WorkSpace\ticket-agency\ticket-agency-db\target\ticket-agency-db.jar [INFO] [INFO] <<< wildfly-maven-plugin:1.0.2.Final:deploy (default-cli) < package @ ticket-agency-db <<< [INFO] [INFO] --- wildfly-maven-plugin:1.0.2.Final:deploy (default-cli) @ ticket-agency-db --- 十二月 13, 2016 4:10:16 下午 org.xnio.Xnio <clinit> INFO: XNIO version 3.2.2.Final 十二月 13, 2016 4:10:16 下午 org.xnio.nio.NioXnio <clinit> INFO: XNIO NIO Implementation Version 3.2.2.Final 十二月 13, 2016 4:10:17 下午 org.jboss.remoting3.EndpointImpl <clinit> INFO: JBoss Remoting version 4.0.3.Final Authenticating against security realm: ManagementRealm [INFO] ------------------------------------------------------------------------ [INFO] BUILD SUCCESS [INFO] ------------------------------------------------------------------------ [INFO] Total time: 7.803 s [INFO] Finished at: 2016-12-13T16:10:20+08:00 [INFO] Final Memory: 25M/206M [INFO] ------------------------------------------------------------------------
- 至此，DAS服务已发布至50.123的机器上，下篇文章，我们使用web服务访问DAS服务。
