如何使用JDBC将InputStream插入CLOB？

Question

I am writing a method that receives a Comma Separated text file as a InputStream through a web service. I created my table using the following SQL script:

CREATE SEQUENCE FILE_NUMBER_SEQ
INCREMENT BY 1
START WITH 1
MINVALUE 1
NOMAXVALUE;

CREATE TABLE FILES
(
    ID        NUMBER  NOT NULL ,
    FILE      CLOB NOT NULL
);

In my unit test I am using the following code to generate the CSV. I cannot create a file b/c of admin rights on the machine the test may be running on:

    String simulatedCSVFile = new String("col1,col2\\ndata1,data2");
    InputStream stream = new ByteArrayInputStream(
                                simulatedCSVFile.getBytes("UTF-8"));

My method currently looks like this:

public void uploadCSVFile(InputStream stream) {
    try {

        Connection conn = null;
        PreparedStatement preparedStmt = null;

        conn = db.getDataSource().getConnection();
        conn.setAutoCommit(false);

        String sql = "INSERT INTO FILES(ID,FILE) VALUES(FILE_NUMBER_SEQ.NEXTVAL,?)";
        preparedStmt = conn.prepareStatement(sql);
        preparedStmt.setAsciiStream(1, stream);
        int count = preparedStmt.executeUpdate();
    }
}

When I execute the method to test it I get an exception that reads "Message payload is of type: jetty.HttpParser" when setAsciiStream is called.

Any idea how I can convert the stream so that it can be added to the SQL for the CLOB?

Answer 1

你能尝试PreparedStatement InputStreamReader和setCharacterStream方法吗？