I am working on velocty and java, I was to take values from an json file (which I took using recursion of JSON OBjects and storing path of recursion(See context below to get idea)
String hhh="I am a ${root.primaryApplicant.firstName} ${firstName} ";
Velocity.init();
VelocityContext vm=new VelocityContext();
for(String m : mp.keySet())
{
vm.put(m,mp.get(m));
}
StringWriter w = new StringWriter();
Velocity.evaluate( vm, w, "mystring", forma );
The map mp is obtained from a json file
{
"id": 45288,
"code": null,
"name": null,
"external": false,
"leadReferenceId": "APPID1573716175142",
"createdBy": null,
"createdDate": "2017-10-26T12:14:17.000Z",
"agentName": null,
"ipAddress": null,
"applicationType": "HOME",
"loanType": "HOME",
"applicantType": {
"id": 269,
"code": "Single",
"name": "Single",
"external": false
},
"relationship": null,
"primaryApplicant": {
"id": 45289,
"code": null,
"name": null,
"external": false,
"existingCustomer": null,
"customerId": null,
"partyRoleType": {
"id": 348,
"code": "0",
"name": "PRIMARY",
"external": false
},
"partyRelationshipType": null,
"salutation": {
"id": 289,
"code": "MR",
"name": "Mr",
"external": false
},
"firstName": "Anuj",
"middleName": "",
"lastName": "singh",
"dateOfBirth": "1986-12-11T18:30:00.000Z",
"genderType": {
using a debugger the context of vm contains
"root.primaryApplicant.firstName" -> "Anuj"
"firstName" -> "Anuj"
after Velocity evaluate I get
"I am a ${root.primaryApplicant.firstName} Anuj ";
i am assuming it cant replace keys with . in between. Is there any better way to populate the string
The velocity file has a "root.*" specified and since I cant edit those, I am using the following recursion program to get the keys
private static void rexuse(String a,Map<String, Object> mp,JSONObject js,String parent) throws JSONException {
Iterator<String> keys = js.keys();
while(keys.hasNext()) {
String key = keys.next();
if(key.equals("name"))
{
mp.put(parent,js.get(key));
}
if (js.get(key) instanceof JSONObject) {
rexuse(a+"."+key,mp,js.getJSONObject(key),key);
}
else
{
if(!mp.containsKey(key) ||( mp.containsKey(key) && mp.get(key)==null))
mp.put(key, js.get(key));
mp.put(a+"."+key, js.get(key) );
}
}
}
where a is the prefix and called the above using
String a="root";
rexuse(a,mp,js,"root");
There is an inconsistency, here.
With the Java initialization code you give, the Velocity template should contain:
${primaryApplicant.firstName}
If you want to use ${root.primaryApplicant.firstName}
, then the other reference should also be prefixed by root, as in ${root.firstName}
, and the Java context initialization code should be:
vm.put("root", mp);
But in both cases you must also check that the json library you are using provides a Json object with a generic getter, so that the 'dot' operator will recursively call the Java method get(<fieldname>)
on the json object. There are tons of those .
The technical post webpages of this site follow the CC BY-SA 4.0 protocol. If you need to reprint, please indicate the site URL or the original address.Any question please contact:yoyou2525@163.com.