package com.sumavision.ecommerce.admin.util;
import java.io.InputStream;
import java.lang.reflect.Method;
public class ClobUtils {
/**
* 将Clob类型的数据转成字符串,如果不是clob类型则返回原对象
* @param in
* @return
*/
public static Object clobToString(Object in){
try{
if ("oracle.sql.CLOB".equals(in.getClass().getName())){
String rtn = "";
oracle.sql.CLOB clob = (oracle.sql.CLOB)in;
InputStream input = clob.getAsciiStream();
int len = (int)clob.length();
byte[] by = new byte[len];
int i ;
while(-1 != (i = input.read(by, 0, by.length))) {
input.read(by, 0, i);
}
rtn = new String(by);
rtn=clob.getSubString((long)1,(int)clob.length());
return rtn;
}else if ("weblogic.jdbc.wrapper.Clob_oracle_sql_CLOB".equals(in.getClass().getName())){
String rtn = "";
Method method = in.getClass().getMethod("getVendorObj",new Class[]{});
oracle.sql.CLOB clob = (oracle.sql.CLOB)method.invoke(in);
InputStream input = clob.getAsciiStream();
int len = (int)clob.length();
byte[] by = new byte[len];
int i ;
while(-1 != (i = input.read(by, 0, by.length))) {
input.read(by, 0, i);
}
rtn = new String(by);
rtn=clob.getSubString((long)1,(int)clob.length());
return rtn;
}else{
return in;
}
}catch (Exception e){
return in;
}
}
}
import java.io.InputStream;
import java.lang.reflect.Method;
public class ClobUtils {
/**
* 将Clob类型的数据转成字符串,如果不是clob类型则返回原对象
* @param in
* @return
*/
public static Object clobToString(Object in){
try{
if ("oracle.sql.CLOB".equals(in.getClass().getName())){
String rtn = "";
oracle.sql.CLOB clob = (oracle.sql.CLOB)in;
InputStream input = clob.getAsciiStream();
int len = (int)clob.length();
byte[] by = new byte[len];
int i ;
while(-1 != (i = input.read(by, 0, by.length))) {
input.read(by, 0, i);
}
rtn = new String(by);
rtn=clob.getSubString((long)1,(int)clob.length());
return rtn;
}else if ("weblogic.jdbc.wrapper.Clob_oracle_sql_CLOB".equals(in.getClass().getName())){
String rtn = "";
Method method = in.getClass().getMethod("getVendorObj",new Class[]{});
oracle.sql.CLOB clob = (oracle.sql.CLOB)method.invoke(in);
InputStream input = clob.getAsciiStream();
int len = (int)clob.length();
byte[] by = new byte[len];
int i ;
while(-1 != (i = input.read(by, 0, by.length))) {
input.read(by, 0, i);
}
rtn = new String(by);
rtn=clob.getSubString((long)1,(int)clob.length());
return rtn;
}else{
return in;
}
}catch (Exception e){
return in;
}
}
}
本文介绍了一种实用工具——ClobUtils,它能够将数据库中的Clob类型数据转换为字符串形式,适用于处理不同类型的Clob对象,包括Oracle SQL Clob和WebLogic包装的Clob。该工具通过反射调用特定方法获取原始Clob对象,并读取其内容。
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