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----------厚厚發(fā)表于 2006年06月27日

網(wǎng)絡(luò)上很多關(guān)于JAVA對(duì)Oracle中BLOB、CLOB類型字段的操作說明，有的不夠全面，有的不夠準(zhǔn)確，甚至有的簡(jiǎn)直就是胡說八道。最近的項(xiàng)目正巧用到了這方面的知識(shí)，在這里做個(gè)總結(jié)。
環(huán)境：
Database: Oracle 9i
App Server: BEA Weblogic 8.14
表結(jié)構(gòu)：
CREATE TABLE TESTBLOB (ID Int, NAME Varchar2(20), BLOBATTR Blob)
CREATE TABLE TESTBLOB (ID Int, NAME Varchar2(20), CLOBATTR Clob)
JAVA可以通過JDBC，也可以通過JNDI訪問并操作數(shù)據(jù)庫(kù)，這兩種方式的具體操作存在著一些差異，由于通過App Server的數(shù)據(jù)庫(kù)連接池JNDI獲得的數(shù)據(jù)庫(kù)連接提供的java.sql.Blob和java.sql.Clob實(shí)現(xiàn)類與JDBC方式提供的不同，因此在入庫(kù)操作的時(shí)候需要分別對(duì)待；出庫(kù)操作沒有這種差異，因此不用單獨(dú)對(duì)待。

一、BLOB操作
1、入庫(kù)
（1）JDBC方式
//通過JDBC獲得數(shù)據(jù)庫(kù)連接
Class.forName("oracle.jdbc.driver.OracleDriver");
Connection con = DriverManager.getConnection("jdbc:oracle:thin:@localhost:1521:testdb", "test", "test");
con.setAutoCommit(false);
Statement st = con.createStatement();
//插入一個(gè)空對(duì)象empty_blob()
st.executeUpdate("insert into TESTBLOB (ID, NAME, BLOBATTR) values (1, "thename", empty_blob())");
//鎖定數(shù)據(jù)行進(jìn)行更新，注意“for update”語句
ResultSet rs = st.executeQuery("select BLOBATTR from TESTBLOB where ID=1 for update");
if (rs.next())
{
//得到j(luò)ava.sql.Blob對(duì)象后強(qiáng)制轉(zhuǎn)換為oracle.sql.BLOB
oracle.sql.BLOB blob = (oracle.sql.BLOB) rs.getBlob("BLOBATTR");
OutputStream outStream = blob.getBinaryOutputStream();
//data是傳入的byte數(shù)組，定義：byte[] data
outStream.write(data, 0, data.length);
}
outStream.flush();
outStream.close();
con.commit();
con.close();
（2）JNDI方式
//通過JNDI獲得數(shù)據(jù)庫(kù)連接
Context context = new InitialContext();
ds = (DataSource) context.lookup("ORA_JNDI");
Connection con = ds.getConnection();
con.setAutoCommit(false);
Statement st = con.createStatement();
//插入一個(gè)空對(duì)象empty_blob()
st.executeUpdate("insert into TESTBLOB (ID, NAME, BLOBATTR) values (1, "thename", empty_blob())");
//鎖定數(shù)據(jù)行進(jìn)行更新，注意“for update”語句
ResultSet rs = st.executeQuery("select BLOBATTR from TESTBLOB where ID=1 for update");
if (rs.next())
{
//得到j(luò)ava.sql.Blob對(duì)象后強(qiáng)制轉(zhuǎn)換為weblogic.jdbc.vendor.oracle.OracleThinBlob（不同的App Server對(duì)應(yīng)的可能會(huì)不同）
weblogic.jdbc.vendor.oracle.OracleThinBlob blob = (weblogic.jdbc.vendor.oracle.OracleThinBlob) rs.getBlob("BLOBATTR");
OutputStream outStream = blob.getBinaryOutputStream();
//data是傳入的byte數(shù)組，定義：byte[] data
outStream.write(data, 0, data.length);
}
outStream.flush();
outStream.close();
con.commit();
con.close();
2、出庫(kù)
//獲得數(shù)據(jù)庫(kù)連接
Connection con = ConnectionFactory.getConnection();
con.setAutoCommit(false);
Statement st = con.createStatement();
//不需要“for update”
ResultSet rs = st.executeQuery("select BLOBATTR from TESTBLOB where ID=1");
if (rs.next())
{
java.sql.Blob blob = rs.getBlob("BLOBATTR");
InputStream inStream = blob.getBinaryStream();
//data是讀出并需要返回的數(shù)據(jù)，類型是byte[]
data = new byte[input.available()];
inStream.read(data);
inStream.close();
}
inStream.close();
con.commit();
con.close();
二、CLOB操作
1、入庫(kù)
（1）JDBC方式
//通過JDBC獲得數(shù)據(jù)庫(kù)連接
Class.forName("oracle.jdbc.driver.OracleDriver");
Connection con = DriverManager.getConnection("jdbc:oracle:thin:@localhost:1521:testdb", "test", "test");
con.setAutoCommit(false);
Statement st = con.createStatement();
//插入一個(gè)空對(duì)象empty_clob()
st.executeUpdate("insert into TESTCLOB (ID, NAME, CLOBATTR) values (1, "thename", empty_clob())");
//鎖定數(shù)據(jù)行進(jìn)行更新，注意“for update”語句
ResultSet rs = st.executeQuery("select CLOBATTR from TESTCLOB where ID=1 for update");
if (rs.next())
{
//得到j(luò)ava.sql.Clob對(duì)象后強(qiáng)制轉(zhuǎn)換為oracle.sql.CLOB
oracle.sql.CLOB clob = (oracle.sql.CLOB) rs.getClob("CLOBATTR");
Writer outStream = clob.getCharacterOutputStream();
//data是傳入的字符串，定義：String data
char[] c = data.toCharArray();
outStream.write(c, 0, c.length);
}
outStream.flush();
outStream.close();
con.commit();
con.close();
（2）JNDI方式
//通過JNDI獲得數(shù)據(jù)庫(kù)連接
Context context = new InitialContext();
ds = (DataSource) context.lookup("ORA_JNDI");
Connection con = ds.getConnection();
con.setAutoCommit(false);
Statement st = con.createStatement();
//插入一個(gè)空對(duì)象empty_clob()
st.executeUpdate("insert into TESTCLOB (ID, NAME, CLOBATTR) values (1, "thename", empty_clob())");
//鎖定數(shù)據(jù)行進(jìn)行更新，注意“for update”語句
ResultSet rs = st.executeQuery("select CLOBATTR from TESTCLOB where ID=1 for update");
if (rs.next())
{
//得到j(luò)ava.sql.Clob對(duì)象后強(qiáng)制轉(zhuǎn)換為weblogic.jdbc.vendor.oracle.OracleThinClob（不同的App Server對(duì)應(yīng)的可能會(huì)不同）
weblogic.jdbc.vendor.oracle.OracleThinClob clob = (weblogic.jdbc.vendor.oracle.OracleThinClob) rs.getClob("CLOBATTR");
Writer outStream = clob.getCharacterOutputStream();
//data是傳入的字符串，定義：String data
char[] c = data.toCharArray();
outStream.write(c, 0, c.length);
}
outStream.flush();
outStream.close();
con.commit();
con.close();
2、出庫(kù)
//獲得數(shù)據(jù)庫(kù)連接
Connection con = ConnectionFactory.getConnection();
con.setAutoCommit(false);
Statement st = con.createStatement();
//不需要“for update”
ResultSet rs = st.executeQuery("select CLOBATTR from TESTCLOB where ID=1");
if (rs.next())
{
java.sql.Clob clob = rs.getClob("CLOBATTR");
Reader inStream = clob.getCharacterStream();
char[] c = new char[(int) clob.length()];
inStream.read(c);
//data是讀出并需要返回的數(shù)據(jù)，類型是String
data = new String(c);
inStream.close();
}
inStream.close();
con.commit();
con.close();
需要注意的地方：
1、java.sql.Blob、oracle.sql.BLOB、weblogic.jdbc.vendor.oracle.OracleThinBlob幾種類型的區(qū)別
2、java.sql.Clob、oracle.sql.CLOB、weblogic.jdbc.vendor.oracle.OracleThinClob幾種類型的區(qū)別

Trackback: http://tb.blog.csdn.net/TrackBack.aspx?PostId=839235

posted @ 2007-07-24 16:43 華夢(mèng)行閱讀(666) | 評(píng)論 (0) | 編輯收藏

最精簡(jiǎn)的webservice

<%@page contentType="text/html"%>
<%@page pageEncoding="UTF-8"%>
<html>
??? <script language="javascript">

//test function with post method
function RequestByPost(value)
{
var data;
data = '<?xml version="1.0" encoding="utf-8"?>';
data = data + '<soapenv:Envelope xmlns:xsi=";
data = data + '<soapenv:Body>';
data = data + '<ns1:getUser xmlns:ns1="http://ss/">';
data = data + '<Name>'+"ffff"+'</Name>';
data = data + '</ns1:getUser>';
data = data + '</soapenv:Body>';
data = data + '</soapenv:Envelope>';

var xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
var URL="http://localhost:8080/myPj/SayHelloTo?wsdl";
xmlhttp.Open("POST",URL, false);
xmlhttp.SetRequestHeader ("Content-Type","text/xml; charset=UTF-8");
xmlhttp.SetRequestHeader ("SOAPAction","http://ss/SayHelloTo");
alert(data);
xmlhttp.Send(data);
alert( xmlhttp.responseText);
document.getElementById('mm').value=xmlhttp.responseText;
}

??? </script>
??? <title>
??????? Call webservice with javascript and xmlhttp.
??? </title>
??? <body>
???????
??????? <div id="mm">
??????? <input type="button" value="CallWebserviceByGet" onClick="RequestByGet(null)">
??????? <input type="button" value="CallWebserviceByPost" onClick="RequestByPost('Zach')">
??????? <input id="mm" type="text"/>
??? </body>
</html>

posted @ 2007-07-17 16:18 華夢(mèng)行閱讀(158) | 評(píng)論 (0) | 編輯收藏

xsl 用來顯示XML

res://msxml.dll/defaultss.xsl

posted @ 2007-07-13 08:24 華夢(mèng)行閱讀(103) | 評(píng)論 (0) | 編輯收藏

soap相應(yīng)

Result:

hello null

<?xml version="1.0" ?><soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:ns1="http://ss/"><soapenv:Body><ns1:sayHelloResponse><return>hello null</return></ns1:sayHelloResponse></soapenv:Body></soapenv:Envelope>

posted @ 2007-07-06 13:10 華夢(mèng)行閱讀(100) | 評(píng)論 (0) | 編輯收藏

nodeType 屬性

KingCMS官方網(wǎng)站 Microsoft 2006-1-31 21:18:32

作用
辨識(shí)節(jié)點(diǎn)的DOM 型態(tài)。　
基本語法
numNodeType ＝ xmlDocNode.nodeType ;
　
說明

此屬性只讀且傳回一個(gè)數(shù)值。

有效的數(shù)值符合以下的型別：
1-ELEMENT
2-ATTRIBUTE
3-TEXT
4-CDATA
5-ENTITY REFERENCE
6-ENTITY
7-PI (processing instruction)
8-COMMENT
9-DOCUMENT
10-DOCUMENT TYPE
11-DOCUMENT FRAGMENT
12-NOTATION
　
　
范例
numNodeType ＝ xmlDoc.documentElement.nodeType;
alert(numNodeType);

posted @ 2007-07-06 12:58 華夢(mèng)行閱讀(128) | 評(píng)論 (0) | 編輯收藏

wsdl

type：表示所有的數(shù)據(jù)類型
Message: 指明被調(diào)用的函數(shù)的參數(shù)
Port:??? 指明服務(wù)的具體內(nèi)容，包括輸入輸出
Binding:? 服務(wù)所綁定的協(xié)議

addTwo Method invocation

Method parameter(s)

Type	Value
int	55
int	676

Method returned

int : "731"

SOAP Request

<?xml version="1.0" encoding="UTF-8"?>
<S:Envelope xmlns:S="http://schemas.xmlsoap.org/soap/envelope/">
    <S:Header/>
    <S:Body>
        <ns2:addTwo xmlns:ns2="http://my/">
            <mm>55</mm>
            <gg>676</gg>
        </ns2:addTwo>
    </S:Body>
</S:Envelope>

SOAP Response

<?xml version="1.0" encoding="UTF-8"?>
<S:Envelope xmlns:S="http://schemas.xmlsoap.org/soap/envelope/">
    <S:Body>
        <ns2:addTwoResponse xmlns:ns2="http://my/">
            <return>731</return>
        </ns2:addTwoResponse>
    </S:Body>
</S:Envelope>

<?xml version="1.0" encoding="UTF-8"?><definitions xmlns:wsu="http://my/" xmlns:xsd="http://my/" name="firstService">
<types>
<xsd:schema>
<xsd:import namespace="http://my/" schemaLocation="http://localhost:8080/ssServ/firstService?xsd=1"></xsd:import>
</xsd:schema>
</types>
<message name="usrLogin">
<part name="parameters" element="tns:usrLogin"></part>
</message>
<message name="usrLoginResponse">
<part name="parameters" element="tns:usrLoginResponse"></part>
</message>
<message name="addTwo">
<part name="parameters" element="tns:addTwo"></part>
</message>
<message name="addTwoResponse">
<part name="parameters" element="tns:addTwoResponse"></part>
</message>
<message name="userLogin">
<part name="parameters" element="tns:userLogin"></part>
</message>
<message name="userLoginResponse">
<part name="parameters" element="tns:userLoginResponse"></part>
</message>
<portType name="first">
<operation name="usrLogin">
<input message="tns:usrLogin"></input>
<output message="tns:usrLoginResponse"></output>
</operation>
<operation name="addTwo">
<input message="tns:addTwo"></input>
<output message="tns:addTwoResponse"></output>
</operation>
<operation name="userLogin">
<input message="tns:userLogin"></input>
<output message="tns:userLoginResponse"></output>
</operation>
</portType>
<binding name="firstPortBinding" type="tns:first">
<soap:binding transport="<operation name="usrLogin">
<soap:operation soapAction=""></soap:operation>
<input>
<soap:body use="literal"></soap:body>
</input>
<output>
<soap:body use="literal"></soap:body>
</output>
</operation>
<operation name="addTwo">
<soap:operation soapAction=""></soap:operation>
<input>
<soap:body use="literal"></soap:body>
</input>
<output>
<soap:body use="literal"></soap:body>
</output>
</operation>
<operation name="userLogin">
<soap:operation soapAction=""></soap:operation>
<input>
<soap:body use="literal"></soap:body>
</input>
<output>
<soap:body use="literal"></soap:body>
</output>
</operation>
</binding>
<service name="firstService">
<port name="firstPort" binding="tns:firstPortBinding">
<soap:address location="http://localhost:8080/ssServ/firstService"></soap:address>
</port>
</service>
</definitions>

從本質(zhì)上說：客戶端發(fā)一個(gè)請(qǐng)求即SOAP 請(qǐng)求頭，到指定的web service地址wsdl，然后經(jīng)過webservice的處理之后，返回一個(gè) SOAP 相應(yīng)，然后再在客戶端解析他們

posted @ 2007-07-05 18:27 華夢(mèng)行閱讀(168) | 評(píng)論 (0) | 編輯收藏

程序員每天該做的事

程序員每天該做的事
1、總結(jié)自己一天任務(wù)的完成情況

最好的方式是寫工作日志，把自己今天完成了什么事情，遇見了什么問題都記錄下來，日后翻看好處多多

2、考慮自己明天應(yīng)該做的主要工作

把明天要做的事情列出來，并按照優(yōu)先級(jí)排列，第二天應(yīng)該把自己效率最高的時(shí)間分配給最重要的工作

3、考慮自己一天工作中失誤的地方，并想出避免下一次再犯的方法

出錯(cuò)不要緊，最重要的是不要重復(fù)犯相同的錯(cuò)誤，那是愚蠢

4、考慮自己一天工作完成的質(zhì)量和效率能否還能提高

一天只提高1%，365天你的效率就能提高多少倍你知道嗎？ (1+0.01)^365 = 37 倍

posted @ 2007-07-05 11:33 華夢(mèng)行閱讀(125) | 評(píng)論 (0) | 編輯收藏

Protype 1

function hel(){
?alert("good");
}?

Event.observe(document, 'mousedown', hel.bindAsEventListener());

? Browser: {
??? IE:???? !!(window.attachEvent && !window.opera),?//判斷是不是IE? 轉(zhuǎn)換為boolean
??? Opera:? !!window.opera,
??? WebKit: navigator.userAgent.indexOf('AppleWebKit/') > -1,
??? Gecko:? navigator.userAgent.indexOf('Gecko') > -1 && navigator.userAgent.indexOf('KHTML') == -1
? },

posted @ 2007-07-03 11:13 華夢(mèng)行閱讀(148) | 評(píng)論 (0) | 編輯收藏

tomcat6學(xué)習(xí)筆記 AnnotationProcessor

AnnotationProcessor ???? Annotation 處理的接口，實(shí)現(xiàn)類是DefaltAnnotationProcessor?:

`protected static?void`	`lookupFieldResource (javax.naming.Context?context, java.lang.Object?instance, java.lang.reflect.Field?field, java.lang.String?name)` ??????????Inject resources in specified field.
`protected static?void`	`lookupMethodResource (javax.naming.Context?context, java.lang.Object?instance, java.lang.reflect.Method?method, java.lang.String?name)` ??????????Inject resources in specified method.
`?void`	`postConstruct (java.lang.Object?instance)` ??????????Call postConstruct method on the specified instance.
`?void`	`preDestroy (java.lang.Object?instance)` ??????????Call preDestroy method on the specified instance.
`?void`	`processAnnotations (java.lang.Object?instance)` ??????????Inject resources in specified instance

public class DefaultAnnotationProcessor implements AnnotationProcessor {
???
??? protected javax.naming.Context context = null;
???
??? public DefaultAnnotationProcessor(javax.naming.Context context) {
??????? this.context = context;
??? }

??? /**
???? * Call postConstruct method on the specified instance.
???? */
??? public void postConstruct(Object instance)
??????? throws IllegalAccessException, InvocationTargetException {
???????
??????? Method[] methods = instance.getClass().getDeclaredMethods();
??????? Method postConstruct = null;
??????? for (int i = 0; i < methods.length; i++) {
??????????? if (methods[i].isAnnotationPresent(PostConstruct.class)) {
??????????????? if ((postConstruct != null)
??????????????????????? || (methods[i].getParameterTypes().length != 0)
??????????????????????? || (Modifier.isStatic(methods[i].getModifiers()))
??????????????????????? || (methods[i].getExceptionTypes().length > 0)
??????????????????????? || (!methods[i].getReturnType().getName().equals("void"))) {
??????????????????? throw new IllegalArgumentException("Invalid PostConstruct annotation");
??????????????? }
??????????????? postConstruct = methods[i];
??????????? }
??????? }

??????? // At the end the postconstruct annotated
??????? // method is invoked
??????? if (postConstruct != null) {
??????????? boolean accessibility = postConstruct.isAccessible();
??????????? postConstruct.setAccessible(true);
??????????? postConstruct.invoke(instance);
??????????? postConstruct.setAccessible(accessibility);
??????? }
???????
??? }
???
???
??? /**
???? * Call preDestroy method on the specified instance.
???? */
??? public void preDestroy(Object instance)
??????? throws IllegalAccessException, InvocationTargetException {
???????
??????? Method[] methods = instance.getClass().getDeclaredMethods();
??????? Method preDestroy = null;
??????? for (int i = 0; i < methods.length; i++) {
??????????? if (methods[i].isAnnotationPresent(PreDestroy.class)) {
??????????????? if ((preDestroy != null)
??????????????????????? || (methods[i].getParameterTypes().length != 0)
??????????????????????? || (Modifier.isStatic(methods[i].getModifiers()))
??????????????????????? || (methods[i].getExceptionTypes().length > 0)
??????????????????????? || (!methods[i].getReturnType().getName().equals("void"))) {
??????????????????? throw new IllegalArgumentException("Invalid PreDestroy annotation");
??????????????? }
??????????????? preDestroy = methods[i];
??????????? }
??????? }

??????? // At the end the postconstruct annotated
??????? // method is invoked
??????? if (preDestroy != null) {
??????????? boolean accessibility = preDestroy.isAccessible();
??????????? preDestroy.setAccessible(true);
??????????? preDestroy.invoke(instance);
??????????? preDestroy.setAccessible(accessibility);
??????? }
???????
??? }
???
???
??? /**
???? * Inject resources in specified instance.
???? */
??? public void processAnnotations(Object instance)
??????? throws IllegalAccessException, InvocationTargetException, NamingException {
???????
??????? if (context == null) {
??????????? // No resource injection
??????????? return;
??????? }
???????
??????? // Initialize fields annotations
??????? Field[] fields = instance.getClass().getDeclaredFields();
??????? for (int i = 0; i < fields.length; i++) {
??????????? if (fields[i].isAnnotationPresent(Resource.class)) {
??????????????? Resource annotation = (Resource) fields[i].getAnnotation(Resource.class);
??????????????? lookupFieldResource(context, instance, fields[i], annotation.name());
??????????? }
??????????? if (fields[i].isAnnotationPresent(EJB.class)) {
??????????????? EJB annotation = (EJB) fields[i].getAnnotation(EJB.class);
??????????????? lookupFieldResource(context, instance, fields[i], annotation.name());
??????????? }
??????????? if (fields[i].isAnnotationPresent(WebServiceRef.class)) {
??????????????? WebServiceRef annotation =
??????????????????? (WebServiceRef) fields[i].getAnnotation(WebServiceRef.class);
??????????????? lookupFieldResource(context, instance, fields[i], annotation.name());
??????????? }
??????????? if (fields[i].isAnnotationPresent(PersistenceContext.class)) {
??????????????? PersistenceContext annotation =
??????????????????? (PersistenceContext) fields[i].getAnnotation(PersistenceContext.class);
??????????????? lookupFieldResource(context, instance, fields[i], annotation.name());
??????????? }
??????????? if (fields[i].isAnnotationPresent(PersistenceUnit.class)) {
??????????????? PersistenceUnit annotation =
??????????????????? (PersistenceUnit) fields[i].getAnnotation(PersistenceUnit.class);
??????????????? lookupFieldResource(context, instance, fields[i], annotation.name());
??????????? }
??????? }
???????
??????? // Initialize methods annotations
??????? Method[] methods = instance.getClass().getDeclaredMethods();
??????? for (int i = 0; i < methods.length; i++) {
??????????? if (methods[i].isAnnotationPresent(Resource.class)) {
??????????????? Resource annotation = (Resource) methods[i].getAnnotation(Resource.class);
??????????????? lookupMethodResource(context, instance, methods[i], annotation.name());
??????????? }
??????????? if (methods[i].isAnnotationPresent(EJB.class)) {
??????????????? EJB annotation = (EJB) methods[i].getAnnotation(EJB.class);
??????????????? lookupMethodResource(context, instance, methods[i], annotation.name());
??????????? }
??????????? if (methods[i].isAnnotationPresent(WebServiceRef.class)) {
??????????????? WebServiceRef annotation =
??????????????????? (WebServiceRef) methods[i].getAnnotation(WebServiceRef.class);
??????????????? lookupMethodResource(context, instance, methods[i], annotation.name());
??????????? }
??????????? if (methods[i].isAnnotationPresent(PersistenceContext.class)) {
??????????????? PersistenceContext annotation =
??????????????????? (PersistenceContext) methods[i].getAnnotation(PersistenceContext.class);
??????????????? lookupMethodResource(context, instance, methods[i], annotation.name());
??????????? }
??????????? if (methods[i].isAnnotationPresent(PersistenceUnit.class)) {
??????????????? PersistenceUnit annotation =
??????????????????? (PersistenceUnit) methods[i].getAnnotation(PersistenceUnit.class);
??????????????? lookupMethodResource(context, instance, methods[i], annotation.name());
??????????? }
??????? }

??? }
???
???
??? /**
???? * Inject resources in specified field.
???? */
??? protected static void lookupFieldResource(javax.naming.Context context,
??????????? Object instance, Field field, String name)
??????? throws NamingException, IllegalAccessException {
???
??????? Object lookedupResource = null;
??????? boolean accessibility = false;
???????
??????? if ((name != null) &&
??????????????? (name.length() > 0)) {
??????????? lookedupResource = context.lookup(name);
??????? } else {
??????????? lookedupResource = context.lookup(instance.getClass().getName() + "/" + field.getName());
??????? }
???????
??????? accessibility = field.isAccessible();
??????? field.setAccessible(true);
??????? field.set(instance, lookedupResource);
??????? field.setAccessible(accessibility);
??? }

??? /**
???? * Inject resources in specified method.
???? */
??? protected static void lookupMethodResource(javax.naming.Context context,
??????????? Object instance, Method method, String name)
??????? throws NamingException, IllegalAccessException, InvocationTargetException {
???????
??????? if (!method.getName().startsWith("set")
??????????????? || method.getParameterTypes().length != 1
??????????????? || !method.getReturnType().getName().equals("void")) {
??????????? throw new IllegalArgumentException("Invalid method resource injection annotation");
??????? }
???????
??????? Object lookedupResource = null;
??????? boolean accessibility = false;
???????
??????? if ((name != null) &&
??????????????? (name.length() > 0)) {
??????????? lookedupResource = context.lookup(name);
??????? } else {
??????????? lookedupResource =
??????????????? context.lookup(instance.getClass().getName() + "/" + method.getName().substring(3));
??????? }
???????
??????? accessibility = method.isAccessible();
??????? method.setAccessible(true);
??????? method.invoke(instance, lookedupResource);
??????? method.setAccessible(accessibility);
??? }
???

}

posted @ 2007-06-28 15:26 華夢(mèng)行閱讀(662) | 評(píng)論 (0) | 編輯收藏

js 排序

http://webfx.eae.net/

posted @ 2007-06-28 12:54 華夢(mèng)行閱讀(118) | 評(píng)論 (0) | 編輯收藏

一個(gè)基本的應(yīng)用了Annotation的基本測(cè)試框架構(gòu)成

? import java.lang.reflect.*;
public class RunTest {
??? public static void main(String[] args) throws Exception {
???????
??????? int passed = 0, failed = 0;
??????? for (Method m : Class.forName("Foo").getMethods()) {
??????????? if (m.isAnnotationPresent(Test.class)) {
??????????????? try {
??????????????????? m.invoke(null);
???????????????????
??????????????????? passed++;
??????????????? } catch (Throwable ex) {
??????????????????? System.out.printf("Test %s failed: %s %n", m, ex.getCause());
??????????????????? failed++;
??????????????? }
??????????? }
??????? }
??????? System.out.printf("Passed: %d, Failed %d%n", passed, failed);
??? }
}

public class Foo {
??? @Test public static void m1() {
??? System.out.println("m1 SUcsessful");
??? }
??? public static void m2() { }
??? @Test public static void m3() {
??????? System.out.println("m3 Fails");
??????? throw new RuntimeException("Boom");
??? }
??? public static void m4() { }
??? @Test public static void m5() { }
??? public static void m6() { }
??? @Test public static void m7() {
??????? throw new RuntimeException("Crash");??????? }
???
??? public static void m8() { }
}

import java.lang.annotation.*;
/*
?* Test.java
?*
?* Created on 2007年6月28日, 上午8:52
?*
?* To change this template, choose Tools | Template Manager
?* and open the template in the editor.
?*/

/**
?*
?* @author ljl
?*/
@Documented
@Retention(RetentionPolicy.RUNTIME)
@Target(ElementType.METHOD)
public @interface Test {
???
???
???
}

posted @ 2007-06-28 09:24 華夢(mèng)行閱讀(297) | 評(píng)論 (0) | 編輯收藏

dwr engine.js 源碼解惑

/** The original page id sent from the server */
dwr.engine._origScriptSessionId = "${scriptSessionId}";

/** The session cookie name */
dwr.engine._sessionCookieName = "${sessionCookieName}"; // JSESSIONID

以上這段代碼取自? dwr?源碼包中?engine.js
這里的${scriptSessionId}?? 與? ${sessionCookieName} 是從哪里或得的，又是怎么獲得的呢。
有怎么會(huì)用? ${}? ,${}?是什么意思呢？請(qǐng)各位大俠不吝賜教！

posted @ 2007-06-21 21:28 華夢(mèng)行閱讀(1839) | 評(píng)論 (2) | 編輯收藏

僅列出標(biāo)題

nodeType 屬性

addTwo Method invocation

Method parameter(s)

Method returned

SOAP Request

SOAP Response

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