以前的一篇文章是關於開發和部署axis2服務的一個簡單例子,因爲有的開發者須要在服務中訪問數據庫,因此我在這裏開發一個訪問oracle數據庫的axis2服務。
具體的axis2服務開發和部署步驟見前面的文章:[url]http://panpan.blog.51cto.com/489034/119204 [/url] 這裏再也不詳述。
新建工程:TestJDBCAxis,在src目錄下新建包org.company,在包下新建DB類,這個類就是我要包裝成服務的代碼。
工程須要加入ojdbc14.jar到build path下。
DB.java代碼以下:
package org.company;
import java.sql.*;
public
class DB {
private String sConnStr = "";
final
static String sDBDriver =
"oracle.jdbc.driver.OracleDriver";
public DB()
{
sConnStr =
"jdbc:oracle:thin:@202.117.118.45:1521:repace";
}
public DB(String ip,String serviceName)
{
sConnStr =
"jdbc:oracle:thin:@"+ip+
":1521:"+serviceName;
}
public DB(String ip,String port,String serviceName)
{
sConnStr =
"jdbc:oracle:thin:@"+ip+
":"+port+
":"+serviceName;
}
public java.sql.Connection connectDbByThin()
{
java.sql.Connection conn=
null;
try
{
Class.forName(sDBDriver);
conn = DriverManager.getConnection(sConnStr,
"RCRegistry",
"repace");
}
catch(Exception e)
{
System.out.println(
"ERROR:"+e.getMessage());
}
return conn;
}
public java.sql.Connection connectDbByThin(String userId,String password)
{
java.sql.Connection conn=
null;
try
{
Class.forName(sDBDriver);
conn = DriverManager.getConnection(sConnStr,userId,password);
}
catch(Exception e)
{
System.out.println(
"ERROR:"+e.getMessage());
}
return conn;
}
public
boolean save(String serviceid) {
DB myDB =
new DB();
java.sql.Connection conn = myDB.connectDbByThin();
System.out.println(conn);
//建立statement對象
Statement stmt;
try {
stmt = conn.createStatement();
String sql =
"insert into SERVICE(\"SERVICEID\") VALUES('" + serviceid +
"')";
stmt.executeQuery(sql);
return
true;
}
catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
return
false;
}
}
/*
public static void main(String[] args) throws SQLException {
DB myDB = new DB();
java.sql.Connection conn = myDB.connectDbByThin();
System.out.println(conn);
//建立statement對象
Statement stmt = conn.createStatement();
String sql = "insert into SERVICE(\"SERVICEID\") VALUES('kkkkkkk1')";
stmt.executeQuery(sql);
//調用並執行SQL語句
//rs.next();
//rs.next();
//System.out.println(rs.getString(2));
}
*/
}
鏈接字符串sConnStr =
"jdbc:oracle:thin:@202.117.118.45:1521:repace";中,
202.117.118.45是oracle數據庫服務器的地址,能夠是遠程或者本地,repace是一個數據庫名。
getConnection(sConnStr,
"RCRegistry",
"repace")中,
RCRegistry是數據庫名,
repace是數據庫密碼。
發佈該工程到axis2服務,服務名爲TestJDBCAxis_service.aar,在axis2的WEB-INF\services下,在網址中輸入:[url]http://localhost:8080/axis2/services/listServices[/url] 能夠看到剛部署好的服務。
編寫客戶端訪問代碼,同上一篇文章,TestDB.java代碼以下:
package org.company;
import javax.xml.namespace.QName;
import org.apache.axis2.AxisFault;
import org.apache.axis2.addressing.EndpointReference;
import org.apache.axis2.client.Options;
import org.apache.axis2.rpc.client.RPCServiceClient;
public
class TestDB {
private RPCServiceClient serviceClient;
private Options options;
private EndpointReference targetEPR;
public TestDB(String endpoint)
throws AxisFault {
serviceClient =
new RPCServiceClient();
options = serviceClient.getOptions();
targetEPR =
new EndpointReference(endpoint);
options.setTo(targetEPR);
}
public Object[] invokeOp(String targetNamespace, String opName,
Object[] opArgs, Class<?>[] opReturnType)
throws AxisFault,
ClassNotFoundException {
// 設定操做的名稱
QName opQName =
new QName(targetNamespace, opName);
// 設定返回值
//Class<?>[] opReturn = new Class[] { opReturnType };
// 操做須要傳入的參數已經在參數中給定,這裏直接傳入方法中調用
return serviceClient.invokeBlocking(opQName, opArgs, opReturnType);
}
/**
* @param args
* @throws AxisFault
* @throws ClassNotFoundException
*/
public
static
void main(String[] args)
throws AxisFault, ClassNotFoundException {
// TODO Auto-generated method stub
final String endPointReference =
"http://localhost:8080/axis2/services/TestJDBCAxisService";
final String targetNamespace = "http://company.org";
TestDB client = new TestDB(endPointReference);
String opName = "save";
Object[] opArgs = new Object[]{"kkkkkkkk11"};
Class<?>[] opReturnType = new Class[]{boolean[].class};
Object[] response = client.invokeOp(targetNamespace, opName, opArgs, opReturnType);
System.out.println(((boolean[])response[0])[0]); }}
運行該代碼,能夠發現出現錯誤,在tomcat後臺打印出: ERROR:Class Not found : oracle.jdbc.driver.OracleDriver 這個錯誤應該引發咱們的注意,由於不少程序開發人員寫web service訪問數據庫常常遇到這樣的錯誤,而後花費很長時間也找不到錯誤的緣由。出現這個錯誤是由於咱們沒有把ojdbc14.jar放入到axis2下的WEB-INF\lib下致使的。 把ojdbc14.jar放入到到axis2下的WEB-INF\lib下,再次運行這個代碼,發現運行成功。