对象与json文件之间的转换

import java.io.File;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import org.codehaus.jackson.map.ObjectMapper;

public class FileObjectConverterOXM {

public void object2File(Object o, File file) throws IOException {
FileWriter writer = new FileWriter(file);
try {
ObjectMapper m = new ObjectMapper();
m.writeValue(writer, o);
} finally {
writer.close();
}
}

public Object file2Object(File file, Class clazz) throws IOException {
FileReader reader = new FileReader(file);
try {
ObjectMapper m = new ObjectMapper();
return m.readValue(reader, clazz);
} finally {
reader.close();
}
}
}