javabeans | 易学教程

Convert xml to java bean

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How can I covert a an xml file to a simple java bean? Its a simple xml file without any xsd, which was generated from a java bean, which I don't have access to. I tried using xmlbeans to first generate the xmd from xml and then to generate classes from the xsd. I got a bunch of classes. I am looking for a single java bean class. JAXB JAXB ( JSR-222 ) provides an easy way to convert objects to XML. There are many open source implementations of this standard including: Metro JAXB (the reference implementation included in Java SE 6) EclipseLink JAXB (MOXy) , I'm the tech lead Apache JaxMe JAXB

Replace spring bean in one context with mock version from another context

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I'm writing an integration test where an application context xml is initialized during startup. There are several test methods in the test class which make use of a specific bean 'X'(already defined in the xml). My actual requirement is to mock bean X only for one of the test methods. Inside a test method: I tried creating a separate application context using ClassPathXMLApplicationContext with only the mock bean 'M'. Now I have two Application Contexts (AC): 1. One created during test case startup (which contains the actual bean X) and 2. One created using ClassPathXMLApplicationContext

Defining the same Spring bean twice with same name

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问题 Is having two definition for a bean (with same name and class) valid in Spring IOC ? I am having two bean definition files included in web.xml. See the sample below. applicationContext-beans1.xml <bean name="myWao" class="com.beans.myBean"> </bean> applicationContext-beans2.xml <bean name="myWao" class="com.beans.myBean"> </bean> I am not facing any issue till now. But, will this possibly impact in the real environment which will be multi threaded and clustered ? Note: Both the XMLs are

how to reference a bean of another xml file in spring

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问题 I have a Spring bean defined in an xml file. I want to reference it from another xml file. How can I go about it? 回答1: You have a couple of options: Import <import resource="classpath:config/spring/that-other-xml-conf.xml"/> <bean id="yourCoolBean" class="org.jdong.MyCoolBean"> <property name="anotherBean" ref="thatOtherBean"/> </bean> Include in the ApplicationContext Construction Make both files a part of your ApplicationContext when you create it => then no import is needed. For example if

Having spring bean properties refreshed automatically from properties file

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I'm using Spring 2.5.6. I have a bean whose properties are being assign from a property file via a PropertyPlaceholderConfigurer . I'm wondering whether its possible to have the property of the bean updated when the property file is modified. There would be for example some periodic process which checks the last modified date of the property file, and if it has changed, reload the bean. I'm wondering if there is already something that satisfies my requirements. If not, what would be the best approach to solving this problem? Thanks for your help. Might also look into useing Spring's

How can I access stored values of a Bean from inside another Class

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How can I implement this functionality? ApplicationConstants.phoneContacts.add( new ContactNumberBean(nameOfContact, contactNumber, contactNumberType)); ApplicationConstants and ContactNumberBean classes ContactNumberBean : package com.example.AddressBook; public class ContactNumberBean { private String nameOfContact; private String contactNumber; private int contactNumberType; public String getnameOfContact() { return nameOfContact; } public String getcontactNumber() { return contactNumber; } public int getcontactNumberType() { return contactNumberType; } public ContactNumberBean(String

Accessing a JSF managedBean from a Servlet [duplicate]

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问题 This question already has answers here : Get JSF managed bean by name in any Servlet related class (6 answers) Closed 4 years ago . I need to know what's the best method for accessing a JSF managedBean (which is defined having application scope) from a servlet. Currently I have something like this in my servlet: MyApplicationScopeBean bean = null; try { FacesContext fContext = FacesUtil.getFacesContext(req, resp); ServletContext sc = (ServletContext) fContext.getExternalContext().getContext()

JavaBeans Comparison

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问题 Does anyone know about a free open source library (utility class) which allows you to compare two instances of one Java bean and return a list/array of properties which values are different in those two instances? Please post a small sample. Cheers Tomas 回答1: BeanComparator of Apache commons is what you are looking for. Update . A simple example that compares JavaBeans with one property (comparation is made agains only one property, you should create as many BeanComparators as properties you

Java Beans, BeanUtils, and the Boolean wrapper class

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问题 I'm using BeanUtils to manipulate Java objects created via JAXB, and I've run into an interesting issue. Sometimes, JAXB will create a Java object like this: public class Bean { protected Boolean happy; public Boolean isHappy() { return happy; } public void setHappy(Boolean happy) { this.happy = happy; } } The following code works just fine: Bean bean = new Bean(); BeanUtils.setProperty(bean, "happy", true); However, attempting to get the happy property like so: Bean bean = new Bean();

How does Spring bean Handle concurrency

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My web application uses spring IOC. So all my spring beans will be singleton (by default).In case if two requests try to access two different methods of a single class. For example : MySpringBean is a class which has two methods searchRecord and insertRecord methods.If at the same instant both the methods are tried to access through the same bean. How does the same spring bean be available to both the clients at the same time or is it going to be concurrency problem when both the requests will try to access two different methods but through the same spring bean. and since spring bean is