Java String just becomes JSON String value, that is, surrounded in double quotes and contents escaped if and as necessary.
So to pretty-print, you need to parse JSON into a Java object structure, then write with pretty-printing. Something like: JsonNode root = mapper.readTree(input); String pretty = mapper.writerWithDefaultPrettyPrinter().writeValueAsString(root); Hope this helps! -+ Tatu +- On Thu, Oct 13, 2016 at 11:45 PM, Serdyn du Toit <dutoi...@gmail.com> wrote: > Hi, > > I'm having a problem getting a String of Json to "pretty print". After > doing some cleanup of the String I can get it "pretty printed" using > https://jsonformatter.curiousconcept.com/, so I think I'm just using the > Jackson Api in the wrong way. > > > Here is my code: > @Test > public void testToPrettyJson_ProblematicString() throws Exception { > String problematicString = "{\"data\":[{\"id\":\" > 57fa47de76a073d78a63b726\",\"firstName\":\"pVvnTRAv\",\" > lastName\":\"ABtWQaSW\",\"fullName\":\"ABtWQaSW, > pVvnTRAv\",\"emailAddress\":\"20161009-15363...@test.com\",\ > "workNumber\":\"+27 12 123 1234\",\"cellNumber\":null,\" > homeNumber\":null,\"status\":\"Pending approval\",\"displayStatus\":\"Pending > approval\",\"displayStatusColor\":\"<span style=\\\"color:red\\\">Pending > approval</span>\",\"suspensionNotes\":\"<span > style=\\\"color:red\\\">Test suspension notes.</span>\",\"notes\": > null,\"createDate\":\"09/10/2016\",\"lastUpdate\":\"09/10/ > 2016\",\"admin\":\"System\",\"isStatusActive\":false}],\" > recordsTotal\":0,\"recordsFiltered\":521,\"draw\":1}"; > trace("Problematic string: " + problematicString); > problematicString = problematicString.replaceAll("\\\"", "\""); > trace("Problematic string after manual cleanup: " + problematicString); > String json = new ObjectMapper().writerWithDefaultPrettyPrinter > ().writeValueAsString(problematicString); > trace("Json: " + json); > } > > > So I think the problem is that I'm using #writeValueAsString(..) when I'm > already working with a String. How can I get my String to "pretty print"? > When I work with objects the #writeValueAsString(..) method works fine, so > I'm just unsure how to proceed now that I'm working with a String... > > > Here's the test's output: > > Problematic string: {"data":[{"id":"57fa47de76a073d78a63b726"," > firstName":"pVvnTRAv","lastName":"ABtWQaSW","fullName":"ABtWQaSW, > pVvnTRAv","emailAddress":"20161009-15363...@test.com","workNumber":"+27 > 12 123 1234","cellNumber":null,"homeNumber":null,"status":"Pending > approval","displayStatus":"Pending approval","displayStatusColor":"<span > style=\"color:red\">Pending approval</span>","suspensionNotes":"<span > style=\"color:red\">Test suspension notes.</span>","notes":null," > createDate":"09/10/2016","lastUpdate":"09/10/2016","admin":"System"," > isStatusActive":false}],"recordsTotal":0,"recordsFiltered":521,"draw":1} > > Problematic string after manual cleanup: {"data":[{"id":" > 57fa47de76a073d78a63b726","firstName":"pVvnTRAv","lastName":"ABtWQaSW","fullName":"ABtWQaSW, > pVvnTRAv","emailAddress":"20161009-15363...@test.com","workNumber":"+27 > 12 123 1234","cellNumber":null,"homeNumber":null,"status":"Pending > approval","displayStatus":"Pending approval","displayStatusColor":"<span > style=\"color:red\">Pending approval</span>","suspensionNotes":"<span > style=\"color:red\">Test suspension notes.</span>","notes":null," > createDate":"09/10/2016","lastUpdate":"09/10/2016","admin":"System"," > isStatusActive":false}],"recordsTotal":0,"recordsFiltered":521,"draw":1} > > Json: "{\"data\":[{\"id\":\"57fa47de76a073d78a63b726\",\" > firstName\":\"pVvnTRAv\",\"lastName\":\"ABtWQaSW\",\"fullName\":\"ABtWQaSW, > pVvnTRAv\",\"emailAddress\":\"20161009-15363...@test.com\",\ > "workNumber\":\"+27 12 123 1234\",\"cellNumber\":null,\" > homeNumber\":null,\"status\":\"Pending approval\",\"displayStatus\":\"Pending > approval\",\"displayStatusColor\":\"<span style=\\\"color:red\\\">Pending > approval</span>\",\"suspensionNotes\":\"<span > style=\\\"color:red\\\">Test suspension notes.</span>\",\"notes\": > null,\"createDate\":\"09/10/2016\",\"lastUpdate\":\"09/10/ > 2016\",\"admin\":\"System\",\"isStatusActive\":false}],\" > recordsTotal\":0,\"recordsFiltered\":521,\"draw\":1}" > > > Any insight appreciated! Many thanks!!! :) > > -- > You received this message because you are subscribed to the Google Groups > "jackson-user" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to jackson-user+unsubscr...@googlegroups.com. > To post to this group, send email to jackson-user@googlegroups.com. > For more options, visit https://groups.google.com/d/optout. > -- You received this message because you are subscribed to the Google Groups "jackson-user" group. To unsubscribe from this group and stop receiving emails from it, send an email to jackson-user+unsubscr...@googlegroups.com. To post to this group, send email to jackson-user@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
