读:
InputStream is = rs.getBinaryStream("字段名");
String len = is.toString();
long length = len.length();
int ch = 0;
byte[] buffer = new Byte[(int)length];写:
File file = new File("...");
int length = (int)file.length();
InputStream is = new FileInputStream(file);
再setBinaryStream
具体看看jdk
其实就是一个get和一个set
InputStream is = rs.getBinaryStream("字段名");
String len = is.toString();
long length = len.length();
int ch = 0;
byte[] buffer = new Byte[(int)length];写:
File file = new File("...");
int length = (int)file.length();
InputStream is = new FileInputStream(file);
再setBinaryStream
具体看看jdk
其实就是一个get和一个set
解决方案 »
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