public void
insertchar(){
Connection conn=null;
PreparedStatement st=null;
ResultSet rs=null;
try {
conn=JdbcUtils.getconnection();
String sql="
insert into
testclob(id,resume) values(?,?)";
st=conn.prepareStatement(sql);
st.setString(1, "1");
File file=new File("src/1.txt");
FileReader reader=new FileReader(file); //字符流
st.
setCharacterStream(2, reader, (int)file.length());
int num=st.executeUpdate();
//executeUpdate() 的返回值类型
if(num>0){
System.out.println("插入成功！！"+num);
}
}catch (Exception e) {
throw new RuntimeException(e);
}finally{
JdbcUtils.release(conn, st, rs);
}
}
@Test
public void
readchar() throws SQLException, IOException{
Connection conn=null;
PreparedStatement st=null;
ResultSet rs=null;
try{
conn=JdbcUtils.getconnection();
String sql="select * from testclob";
st=conn.prepareStatement(sql);
rs=st.executeQuery();
while(rs.next()){ //字符读取模板代码
Reader reader=rs.getCharacterStream("resume");
FileWriter writer=new FileWriter("c:\\1.txt",true); //加true续写
try {
int len=0;
char buffer[]=new char[1024];
while((len=reader.read(buffer))>0){
writer.write(buffer, 0, len);
}
}finally{
if(reader!=null){
try {
reader.close();
} catch (Exception e) {
throw new RuntimeException(e);
}
}
if(writer!=null){
try {
writer.close();
} catch (Exception e) {
throw new RuntimeException(e);
}
}
}
}
}finally{
JdbcUtils.release(conn, st, rs);
}
}