java - how to encode servlet response to base64? -

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• base64 encoding in java 16 answers
• how read image (or other file) in servlet , encode base64 [duplicate] 2 answers

i trying send images in servlet ajax call showing characters in browser instead. question how encode servlet response in base64. have image response.

servlet code :

response.setcontenttype("image/jpeg"); servletoutputstream out;   out = response.getoutputstream(); fileinputstream fin = new fileinputstream("d:\\astro\\html5up-arcana (1)\\images\\1.jpg");  bufferedinputstream bin = new bufferedinputstream(fin);   bufferedoutputstream bout = new bufferedoutputstream(out);   int ch =0; ;   while((ch=bin.read())!=-1) {       bout.write(ch);   }   

ajax code :

$(document).ready(function() {     $('#nxt').click(function() {         $.ajax({             url : 'displayimage',             data : {                 username : 'hi'             },             success : function(result) {                 $('#gallery-overlay').html('<img src="data:image/jpeg;base64,'+result+'"/>');             }         });     }); }); 

• using java.util.base64 jdk8

  byte[] contents = new byte[1024]; int bytesread = 0; string strfilecontents; while ((bytesread = bin.read(contents)) != -1) {     bout.write(java.util.base64.getencoder().encode(contents), bytesread); } 

• using sun.misc.base64encoder, note that: oracle says sun.* packages not part of supported, public interface. therefore try prevent using method

  sun.misc.base64encoder encoder= new sun.misc.base64encoder(); byte[] contents = new byte[1024]; int bytesread = 0; string strfilecontents; while ((bytesread = bin.read(contents)) != -1) {     bout.write(encoder.encode(contents).getbytes()); } 

• using org.apache.commons.codec.binary.base64

  byte[] contents = new byte[1024]; int bytesread = 0; while ((bytesread = bin.read(contents)) != -1) {     bout.write(org.apache.commons.codec.binary.base64.encodebase64(contents), bytesread); }