JaxB-应用举例
预期的XML配置文件达到的效果如下：
<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<ns2:xmlSourceGroup xmlns:ns2="http://www.yonyou.com.cn/search-metadata">
?? ?<sourceGroups>
?? ? ? ?<sourceGroup securityPlugin="sdfsdf" description="sdfsdf" name="sfsdf" id="sfdsd">
?? ? ? ? ? ?<sources>
?? ? ? ? ? ? ? ?<source description="哈哈哈" name="testsource" id="han">
?? ? ? ? ? ? ? ? ? ?<parameters/>
?? ? ? ? ? ? ? ? ? ?<fields>
?? ? ? ? ? ? ? ? ? ? ? ?<field fieldType="Boolean" strategy="text_whitespace" name="sdf"/>
?? ? ? ? ? ? ? ? ? ?</fields>
?? ? ? ? ? ? ? ?</source>
?? ? ? ? ? ?</sources>
?? ? ? ?</sourceGroup>
?? ?</sourceGroups>
</ns2:xmlSourceGroup>
?
?
@XmlAccessorType(XmlAccessType.FIELD)
@XmlAccessorOrder(XmlAccessOrder.UNDEFINED)
@XmlType(propOrder = { "name", "strategy", "isKey", "isACL", "pinYinType",
"dataOrigin", "fieldType", "compoundType", "isSuggest" })
public class Field implements IField ,Serializable {
?
private static final long serialVersionUID = -3018559388328279993L;
?
@XmlAttribute
private String name;
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@XmlValue
private String dataOrigin;
?
@XmlAttribute
private String strategy;
?
@XmlAttribute
private Boolean isACL;
?
@XmlAttribute
private String pinYinType;
?
@XmlAttribute
private String fieldType;
?
@XmlAttribute
private Boolean isKey;
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@XmlAttribute
private String compoundType;
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@XmlAttribute
private Boolean isSuggest;
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@Override
public String getDataOrigin() {
return dataOrigin;
}
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@Override
public String getName() {
return name;
}
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@Override
public String getStrategy() {
return strategy;
}
?
@Override
public Boolean isACL() {
if (isACL == null) {
return Boolean.FALSE;
}
return isACL;
}
?
@Override
public String getPinYinType() {
if (pinYinType == null)
return PinYinType.Nonsupport.toString();
return pinYinType;
}
?
public void setACL(Boolean isACL) {
this.isACL = isACL ? Boolean.TRUE : null;
}
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public void setDataOrigin(String dataOrigin) {
this.dataOrigin = dataOrigin;
}
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public void setName(String name) {
this.name = name;
}
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public void setStrategy(String strategy) {
this.strategy = strategy;
}
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public void setPinYinType(String pinYinType) {
this.pinYinType = pinYinType;
}
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public String getFieldType() {
return fieldType;
}
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public void setFieldType(String fieldType) {
this.fieldType = fieldType;
}
?
@Override
public Boolean isKey() {
if (isKey == null) {
return Boolean.FALSE;
}
return isKey;
}
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public void setKey(Boolean isKey) {
this.isKey = isKey ? Boolean.TRUE : null;
?
}
?
@Override
public String getCompoundType() {
return compoundType;
}
?
public void setCompoundType(String compoundType) {
this.compoundType = compoundType;
}
?
@Override
public Boolean isSuggest() {
if (isSuggest == null) {
return Boolean.FALSE;
}
return isSuggest;
}
?
public void setSuggest(Boolean isSuggest) {
this.isSuggest = isSuggest ? Boolean.TRUE : null;
}
?
@Override
public int hashCode() {
return getName().hashCode() ^ 1234321 ;
}
?
@Override
public boolean equals(Object obj) {
if(obj == null){
return false;
}
if(obj instanceof Field){
Field anotherField = (Field) obj;
if(this.getName().equals(anotherField.getName())){
return true;
}
}
return false;
}
?
}
?
?
@XmlAccessorType(XmlAccessType.FIELD)
@XmlAccessorOrder(XmlAccessOrder.UNDEFINED)
public final class Source implements ISource ,Serializable {
?
/**
*?
*/
private static final long serialVersionUID = 8365332767467941142L;
?
@XmlAttribute
private String id;
?
@XmlAttribute
private String name;
?
@XmlAttribute
private String description;
?
@XmlElementWrapper(name = "parameters")
@XmlElement(name = "parameter")
private List<Parameter> parameters;
?
@XmlElementWrapper(name = "fields")
@XmlElement(name = "field")
private List<Field> fields;
?
@Override
public String getId() {
return id;
}
?
@Override
public String getName() {
return name;
}
?
@Override
public String getDescription() {
return description;
}
?
@Override
public List<Parameter> getParameters() {
return parameters;
}
?
public Parameter getParameter(String paramName){
if(parameters == null)
return null;
for(Parameter param : parameters){
if(param.getName().equals(paramName))
return param;
}
return null;
}
?
@Override
public List<Field> getFields() {
return fields;
}
?
public void setFields(List<Field> fields) {
this.fields = fields;
}
?
public void setId(String id) {
this.id = id;
}
?
public void setName(String name) {
this.name = name;
}
?
public void setDescription(String description) {
this.description = description;
}
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public void setParameters(List<Parameter> parameters) {
this.parameters = parameters;
}
?
@Override
public int hashCode() {
return id.hashCode();
}
?
@Override
public boolean equals(Object obj) {
if(obj == null)
return false ;
if(obj instanceof Source)
{
Source anObject = (Source)obj ;
if(this.getId().equals(anObject.getId()))
return true;
}
return false;
}
?
}
?
?
?
@XmlAccessorType(XmlAccessType.FIELD)
@XmlType
public class SourceGroup implements ISourceGroup,Serializable {
?
/**
*?
*/
private static final long serialVersionUID = -8087962860520149779L;
?
@XmlAttribute
private String id;
?
@XmlAttribute
private String name;
?
@XmlAttribute
private String description;
?
@XmlAttribute
private String sourceType;
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@XmlAttribute
private String securityPlugin;
?
@XmlElementWrapper(name = "sources")
@XmlElement(name = "source")
private List<Source> sources;
?
@Override
public String getDescription() {
return description;
}
?
@Override
public String getId() {
return id;
}
?
@Override
public String getName() {
return name;
}
?
public String getSecurityPlugin() {
return securityPlugin;
}
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public List<Source> getSources() {
return sources;
}
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public String getSourceType() {
return sourceType;
}
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public void setDescription(String description) {
this.description = description;
}
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public void setId(String id) {
this.id = id;
}
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public void setName(String name) {
this.name = name;
}
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public void setSecurityPlugin(String securityPlugin) {
this.securityPlugin = securityPlugin;
}
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public void setSources(List<Source> sources) {
this.sources = sources;
}
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public void setSourceType(String sourceType) {
this.sourceType = sourceType;
}
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@Override
public int hashCode() {
return id.hashCode();
}
?
public Source getSource(String sourceId) {
if (sourceId == null)
return null;
for (Source src : sources) {
if (src.getId().equals(sourceId))
return src;
}
return null;
}
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public void removeSource(String sourceID) {
Source removeSource = getSource(sourceID);
sources.remove(removeSource);
}
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@Override
public boolean equals(Object obj) {
if (obj == null)
return false;
if (obj instanceof SourceGroup) {
SourceGroup anObject = (SourceGroup) obj;
if (this.getId().equals(anObject.getId())) {
return true;
}
}
return false;
}
?
}
?
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最终的与配置文件相对应的JavaBean如下：
@XmlRootElement(name = "xmlSourceGroup")
@XmlType
public class XMLSourceGroup implements Serializable {
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private static final long serialVersionUID = 1865617884435489731L;
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@XmlElementWrapper(name = "sourceGroups")
@XmlElement(name = "sourceGroup")
List<SourceGroup> sourceGroups;
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public List<SourceGroup> getSourceGroups() {
return sourceGroups;
}
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public void setSourceGroups(List<SourceGroup> sourceGroups) {
this.sourceGroups = sourceGroups;
}
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public void addGroup(SourceGroup group) {
if (group == null)
return;
if (sourceGroups == null) {
sourceGroups = new ArrayList<SourceGroup>();
}
sourceGroups.add(group);
}
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public void addGroups(List<SourceGroup> addGroups) {
if (addGroups == null)
return;
if (sourceGroups == null) {
sourceGroups = new ArrayList<SourceGroup>();
}
?
for (SourceGroup group : addGroups) {
if (!sourceGroups.contains(group)) {
sourceGroups.add(group);
}
}
}
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public void removeGroup(SourceGroup group) {
if (sourceGroups == null)
return;
sourceGroups.remove(group);
}
?
public void removeGroup(String groupID) {
SourceGroup group = getSourceGroup(groupID);
removeGroup(group);
}
?
public void addSource(Source source, String group) {
SourceGroup srcGroup = getSourceGroup(group);
List<Source> sources = srcGroup.getSources();
if (sources == null) {
sources = new ArrayList<Source>();
}
sources.add(source);
srcGroup.setSources(sources);
}
?
public void removeSource(Source source, String group) {
SourceGroup srcGroup = getSourceGroup(group);
List<Source> sources = srcGroup.getSources();
if (sources == null) {
return;
}
sources.remove(source);
}
?
public void removeSource(String groupID, String sourceID) {
SourceGroup srcGroup = getSourceGroup(groupID);
if (srcGroup == null)
return;
srcGroup.removeSource(sourceID);
}
?
public SourceGroup getSourceGroup(String groupID) {
if (sourceGroups == null)
return null;
for (SourceGroup group : sourceGroups) {
if (group.getId().equals(groupID)) {
return group;
}
}
return null;
}
?
public String[] getGroupIds() {
if (sourceGroups == null)
return null;
List<String> ids = new ArrayList<String>();
for (SourceGroup group : sourceGroups) {
ids.add(group.getId());
}
return ids.toArray(new String[0]);
}
}
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?
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读取逻辑：
?? ? ?private static void loadGroupConfig() {
JAXBContext jc;
Unmarshaller unmarshaller = null;
try {
jc = initJAXBContext(XMLSourceType.class);
unmarshaller = jc.createUnmarshaller();
} catch (JAXBException e) {
throw new RuntimeException("load " + IMetaDataResource.SOURCE_GROUP
+ " error, init unmarshaller failed!", e);
}
String ncHome = RuntimeEnv.getInstance().getNCHome();
File configFile = new File(ncHome, IMetaDataResource.SOURCE_GROUP_FILE);
XMLSourceGroup defaultGroup = null;
xmlSourceGroup = new XMLSourceGroup();
if (configFile.exists()) {
try {
defaultGroup = (XMLSourceGroup) unmarshaller
.unmarshal(configFile);
xmlSourceGroup.addGroups(defaultGroup.getSourceGroups());
} catch (Exception e) {
AnteLogger.error(IMetaDataResource.SOURCE_GROUP + " load failed!",
e);
}
}
FileResource[] moduleGroupFile = new ModulesFileResourceLoader(
new File(ncHome, "modules"))
.getResource("config\\searchconfig\\source-group-config.xml");
for (FileResource resource : moduleGroupFile) {
try {
XMLSourceGroup moduleGroup = (XMLSourceGroup) unmarshaller
.unmarshal(resource.getFile());
xmlSourceGroup.addGroups(moduleGroup.getSourceGroups());
} catch (JAXBException e) {
try {
AnteLogger.error("parse search source group ["
+ resource.getFile().getCanonicalPath() + "]"
+ e.getMessage());
} catch (IOException e1) {
// none to do ;
}
}
}
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}
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写入逻辑：
?? ? ? ?public static void saveToLocal(XMLSourceGroup xmlSourceGroup)
throws Exception {
JAXBContext jc;
Marshaller marshaller = null;
try {
jc = initJAXBContext(XMLSourceGroup.class);
marshaller = jc.createMarshaller();
} catch (JAXBException e) {
throw new RuntimeException("save " + IMetaDataResource.SOURCE_GROUP
+ " error, init marshaller failed!", e);
}
String ncHome = RuntimeEnv.getInstance().getNCHome();
File configFile = new File(ncHome, IMetaDataResource.SOURCE_GROUP_FILE);
if (!configFile.canWrite()) {
configFile.setWritable(true);
}
marshaller.setProperty(Marshaller.JAXB_ENCODING, "UTF-8");
marshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, true);
marshaller.marshal(xmlSourceGroup, new FileOutputStream(configFile));
}
