components.xml 配置seam组件
components.xml 的配置采用反射机制来实现,组件类的私有属性照样可以设置(private String f1;)
如下的私有属性resolverChains没有提供get、set方法照样可以配置赋值 。之前我一直以为私有的属性是不可以设置的,原来大错特错了。
public class PermissionMapper implements Serializable
{
private Map<Class,Map<String,String>> resolverChains = new HashMap<Class,Map<String,String>>();<security:permission-mapper default-resolver-chain="defaultChain" resolver-chains="#{resolverChains}"> </security:permission-mapper>
基本component配置
所有seam组件都可以使用基本component方式来配置,示例如下
<component class="org.jboss.seam.bpm.Jbpm"/>
<component name="customerDatabase"class="org.jboss.seam.persistence.ManagedPersistenceContext">
<component name="accountingDatabase"
class="org.jboss.seam.persistence.ManagedPersistenceContext">
<propertyname="persistenceUnitJndiName">java:/accountingEntityManagerFactory</
property>
</component><component class="com.helloworld.Hello" name="hello">
<propertyname="name">#{user.name}</property>
</component>xs:element name="component"
<xs:element name="component">
<xs:annotation>
<xs:documentation>ThecomponenttagdefinesasingleSeamcomponent.Itmayserveastotherootelementof
afine-grained*.component.xmlfile.</xs:documentation>
</xs:annotation>
<xs:complexType>
<xs:sequence>
<xs:elementminOccurs="0"maxOccurs="unbounded"ref="components:property"/>
</xs:sequence>
<xs:attributeGroupref="components:attlist.component"/>
<xs:attributeGroupref="components:attlist.ejbcomponent"/>
</xs:complexType>
</xs:element>xs:element name="property"
<xs:element name="property">
<xs:annotation>
<xs:documentation>
Agenericproperty.Thebodycontainsthevalueorvalues.
</xs:documentation>
</xs:annotation>
<xs:complexTypemixed="true">
<xs:choiceminOccurs="0"maxOccurs="unbounded">
<xs:elementref="components:key"/>
<xs:elementref="components:value"/>
</xs:choice>
<xs:attributeGroupref="components:attlist.property"/>
</xs:complexType>
</xs:element>attlist.property
<property name=“name” type="org.manaty.mvno.portal.Party">
<xs:attributeGroup name="attlist.property">
<xs:attributename="name"use="required"type="components:string">
<xs:annotation>
<xs:documentation>Thepropertyname</xs:documentation>
</xs:annotation>
</xs:attribute>
<xs:attributename="type"type="components:string">
<xs:annotation>
<xs:documentation>Concretetypetouseifthepropertyismulti-valued</xs:documentation>
</xs:annotation>
</xs:attribute>
</xs:attributeGroup>key
与vlaue配合使用
<property name="issueStatusOptions" type="java.util.LinkedHashMap">
<key>open</key><value>openissue</value>
<key>resolved</key><value>issueresolvedbydeveloper</value>
<key>closed</key><value>resolutionacceptedbyuser</value>
</property><xs:element name="key" type="components:string">
<xs:annotation>
<xs:documentation>Formapvalues,thekeyforthefollowingvalue</xs:documentation>
</xs:annotation>
</xs:element>最低级元素了,不能再有子元素
value
设置list,与key配合可以设置map
<value>processTestStock/processdefinition.xml</value> <value>processTestStockRoaming/processdefinition.xml</value>
<xs:element name="value" type="components:string">
<xs:annotation>
<xs:documentation>
Forlistvalues,thevaluetobeadded.
Formapvalues,thevaluefortheprecedingkey
</xs:documentation>
</xs:annotation>
</xs:element>最低级元素了,不能再有子元素
property属性取值
有三种方式设置property的值
1)直接字符串,只能设置String类型的属性
<property name="persistenceUnitJndiName">java:/accountingEntityManagerFactory</
property>
</component>2)使用表达式,可以设置任意Object类型的属性<property name="user">#{user}</property>
3)从components.properties(组件属性文件)中获取,只能是String
<property name="filename">@properties.filename@</property>
components.properties文件内容如下
jndiPattern=portal/#{ejbName}/local
debug=true
properties.filename=portal.properties
properties.reload=true不是以@开头的直接返回即可 ,任何以@开头的都会从components.properties中获取,不单单是在 property中
<core:init debug="true" jndi-pattern="@jndiPattern@"/>
private String replace(String value, Properties replacements)
{
if(value.startsWith("@"))
{
value=replacements.getProperty(value.substring(1,value.length()-1));
}
returnvalue;
}component只能有property子节点,property的属性级子节点的属性(key,value)都可以使用字符串和表达式两种形式,表达式可以设置object类型的值
map
可以使用key,value元素来实现map的配置,需要注意的是bean属性(map属性)的写法,配置会获取bean的属性,不管该属性是否有对应的set方法,将配置的值put进map中,所以属性值必须首先赋值( = new HashMap)
<security:permission-mapper default-resolver-chain="defaultChain">
<security:resolver-chains>
<key>org.manaty.model.party.Party</key><value>#{partyResolverMap.configMap}</value>
<key>org.manaty.model.order.Order</key><value>#{partyResolverMap.configMap}</value>
</security:resolver-chains>
</security:permission-mapper>public class PermissionMapper implements Serializable
{
private Map<Class,Map<String,String>> resolverChains = new HashMap<Class,Map<String,String>>();定义map组件
由于key、value是最底层的元素,所以不能定义嵌套的map,比如Map<Class,Map<String,String>>是不能直接定义的,需要将Map<String,String>定义成一个组件。
定义一个包含map的组件
<component name="partyResolverMap" class="org.manaty.util.SeamUtil" auto-create="true" scope="application">
<propertyname="configMap">
<key>restrictPartyResource</key><value>partyChain</value>
</property>
</component>使用上面定义的map
<security:permission-mapper default-resolver-chain="defaultChain">
<security:resolver-chains>
<key>org.manaty.model.party.Party</key><value>#{partyResolverMap.configMap}</value>
<key>org.manaty.model.order.Order</key><value>#{partyResolverMap.configMap}</value>
</security:resolver-chains>
</security:permission-mapper>public class SeamUtil {
private Map<String,String> configMap=new HashMap<String,String>();
publicMap<String,String>getConfigMap(){
returnconfigMap;
}特定组件配置
seam对一些常用的内置组件定义定义了些schema,这样就可以利用编辑器的提示功能还编写组件配置了,这样可以提高效率。
<core:manager concurrent-request-timeout="500"
conversation-timeout="120000"conversation-id-parameter="cid"
parent-conversation-id-parameter="pid" />所有特定组件都按照规定的模式来解析配置,所以即使系统没有提供对应的schema,我们也可以按照规则来使用。
1)在包中增加 package-info.java,用来定义namespace和prefix
@Namespace(value="http://jboss.com/products/seam/security", prefix="org.jboss.seam.security")
@AutoCreate
packageorg.jboss.seam.security.management;
importorg.jboss.seam.annotations.AutoCreate;
import org.jboss.seam.annotations.Namespace;不同的包可以有相同的 package-info.java定义
如下两个包中的package-info.java的定义是相同的
package org.jboss.seam.security.management
package org.jboss.seam.security;
2)tag name和属性名的拼写规则
<security:permission-mapper default-resolver-chain="defaultChain" resolver-chains="#{resolverChains}"> </security:permission-mapper>
tag name:permission-mapper对应类名PermissionMapper,将类名的首字母小写,中间的大写字母换成(-小写)
属性:default-resolver-chain对应private String defaultResolverChain;大写字母换成(-小写)