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2023-06-08 10:57| 来源: 网络整理| 查看: 265

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ä¸è½½ IBM å¼æº J2EE åºç¨æå¡å¨ WAS CE æ°çæ¬ V1.1

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Ted Bergeron ([email protected]), åä½åå§äºº, Triview, Inc.

2006 å¹´ 10 æ 10 æ¥

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æ¸å 1. ä½¿ç¨ HibernateDoclet ç Hibernate æ å°ä»£ç /** * @hibernate.property column="NAME" length="60" not-null="true" */ public String getName() { return this.name; } /** * @hibernate.many-to-one column="AGENT_ID" not-null="true" cascade="none" * outer-join="false" lazy="true" */ public Agent getAgent() { return agent; } /** * @hibernate.set lazy="true" inverse="true" cascade="all" table="DEPARTMENT" * @hibernate.collection-one-to-many class="com.triview.model.Department" * @hibernate.collection-key column="DEPARTMENT_ID" not-null="true" */ public List getDepartment() { return department; } æ¸å 2. ä½¿ç¨ Hibernate Annotations ç Hibernate æ å°ä»£ç @NotNull @Column(name = "name") @Length(min = 1, max = NAME_LENGTH) // NAME_LENGTH is a constant declared elsewhere public String getName() { return name; } @NotNull @ManyToOne(cascade = {CascadeType.MERGE }, fetch = FetchType.LAZY) @JoinColumn(name = "agent_id") public Agent getAgent() { return agent; } @OneToMany(mappedBy = "customer", fetch = FetchType.LAZY) public List getDepartment() { return department; }

@Max(value = 100) @Min(value = 0) @Past @Future @Email

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æ´æ° DDL æ¥å¢å¤§æ°æ®åºåçé¿åº¦ï¼éè¿ HibernateDocletã hbm.xml æ Hibernate Annotationsï¼ã æ´æ° Commons Validator XML æä»¶å°æå¤§å¼å¢å å° 75ã æ´æ°ææä¸è¿ä¸ªåæå³ç HTML è¡¨åï¼ä»¥ä¿®æ¹ maxlength å±æ§ã

æ¸å 3. éè¿ Hibernate Annotations è¿è¡æ å°çç®åèç³»æ¹å¼ /** * A Simplified object that stores contact information. * * @author Ted Bergeron * @version $Id: Contact.java,v 1.1 2006/04/24 03:39:34 ted Exp $ */ @MappedSuperclass @Embeddable public class Contact implements Serializable { public static final int MAX_FIRST_NAME = 30; public static final int MAX_MIDDLE_NAME = 1; public static final int MAX_LAST_NAME = 30; private String fname; private String mi; private String lname; private Date dateOfBirth; private String emailAddress; private Address address; public Contact() { this.address = new Address(); } @Valid @Embedded public Address getAddress() { return address; } public void setAddress(Address a) { if (a == null) { address = new Address(); } else { address = a; } } @NotNull @Length(min = 1, max = MAX_FIRST_NAME) @Column(name = "fname") public String getFirstname() { return fname; } public void setFirstname(String fname) { this.fname = fname; } @Length(min = 1, max = MAX_MIDDLE_NAME) @Column(name = "mi") public String getMi() { return mi; } public void setMi(String mi) { this.mi = mi; } @NotNull @Length(min = 1, max = MAX_LAST_NAME) @Column(name = "lname") public String getLastname() { return lname; } public void setLastname(String lname) { this.lname = lname; } @NotNull @Past @Column(name = "dob") public Date getDateOfBirth() { return dateOfBirth; } public void setDateOfBirth(Date dateOfBirth) { this.dateOfBirth = dateOfBirth; } @NotNull @Email @Column(name = "email") public String getEmailAddress() { return emailAddress; } public void setEmailAddress(String emailAddress) { this.emailAddress = emailAddress; }

å¦æéè¦ï¼Hibernate DAO å®ç°ä¹å¯ä»¥ä½¿ç¨ Validation Annotationsãæéåçæ¯å¨ hibernate.cfg.xml æä»¶ä¸æå®åºäº Hibernate äºä»¶çéªè¯è§åãï¼æ´å¤ä¿¡æ¯è¯·åè Hibernate Validator çææ¡£ï¼å¯ä»¥å¨ åèèµæ ä¸èä¸æ¾å°ç¸å³çé¾æ¥ï¼ãå¦æçå°å¸ææè¿è·¯ï¼æ¨å¯ä»¥åªæè·æå¡ææ§å¶å¨ä¸ç InvalidStateException å¼å¸¸ï¼å¹¶å¾ªç¯éå InvalidValue æ°ç»ã

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æ¸å 4. å¤çéªè¯çå®ç¨å·¥å·ç±» /** * Handles validations based on the Hibernate Annotations Validator framework. * @author Ted Bergeron * @version $Id: AnnotationValidator.java,v 1.5 2006/01/20 17:34:09 ted Exp $ */ public class AnnotationValidator { private static Log log = LogFactory.getLog(AnnotationValidator.class); // It is considered a good practice to execute these lines once and // cache the validator instances. public static final ClassValidator CUSTOMER_VALIDATOR = new ClassValidator(Customer.class); public static final ClassValidator CREDIT_CARD_VALIDATOR = new ClassValidator(CreditCard.class); private static ClassValidator 1.0 form formtags text /WEB-INF/tags/form/text.tag determine if field is required from Annotations required com.triview.web.Utilities Boolean required(java.lang.Object,java.lang.String)

æ¸å 7. Utilities èé public static Boolean required(Object object, String propertyPath) { Method getMethod = findGetterMethod(object, propertyPath); if (getMethod == null) { return null; } else { return getMethod.isAnnotationPresent(NotNull.class); } } public static Boolean isDate(Object object, String propertyPath) { return java.util.Date.class.equals(getReturnType(object, propertyPath)); } public static Class getReturnType(Object object, String propertyPath) { Method getMethod = findGetterMethod(object, propertyPath); if (getMethod == null) { return null; } else { return getMethod.getReturnType(); } }

æ¸å 8. ä¸ä¸ªåå«è¡¨åçç®å JSP é¡µé¢ Help

æ¸å 9. æ ç¾æä»¶ text.tag èé

Calendar.setup( { inputField : "${status.expression}", // ID of the input field ifFormat : "%m/%d/%Y", // the date format button : "${status.expression}_button" // ID of the button } );

error ${status.errorMessage}

æ¸å 10. å¯¹å¿é¡»åè¿è¡è£é¥°ç CSS ä»£ç label.required { color: black; background-image: url( /images/icons/flag_red.png ); background-position: left; background-repeat: no-repeat; } label.required:after { content: '*'; } label.optional { color: black; }

æ¸å 11. ç®åç JavaScript éªè¯ç¨åº function checkRequired(form) { var requiredLabels = document.getElementsByClassName("required", form); for (i = 0; i < requiredLabels.length; i++) { var labelText = requiredLabels[i].firstChild.nodeValue; // Get the label's text var labelFor = requiredLabels[i].getAttribute("for"); // Grab the for attribute var inputTag = document.getElementById(labelFor); // Get the input tag if (inputTag.value == null || inputTag.value == "") { alert("Please make sure all required fields have been entered."); return false; // Abort Submit } } return true; }

οnclick="new Effect.SlideDown('creditCardHelp')"

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