Java Utililty Methods Object to Json

List of utility methods to do Object to Json

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Description

The list of methods to do Object to Json are organized into topic(s).

Method

Stringobj2Json(Object obj)
obj Json 
try {
    ObjectMapper objectMapper = new ObjectMapper();
    ObjectWriter ow = objectMapper.writer().withDefaultPrettyPrinter();
    return ow.writeValueAsString(obj);
} catch (Exception e) {
    e.printStackTrace();
    return null;
Stringobject2Jason(Object obj)
object Jason 
try {
    return objectMapper.writeValueAsString(obj);
} catch (JsonProcessingException e) {
    return null;
booleanobjectToString(StringBuilder bld, ObjectNode node, int depth, boolean newLine)
object To String 
if (newLine) {
    indent(bld, depth);
    newLine = false;
if (node.size() > 0) {
    bld.append("{\n");
    newLine = true;
boolean first = true;
for (Iterator<Map.Entry<String, JsonNode>> itr = node.fields(); itr.hasNext();) {
    if (first) {
        first = false;
    } else {
        if (newLine) {
            indent(bld, depth);
            newLine = false;
        bld.append(',');
        bld.append('\n');
        newLine = true;
    Map.Entry<String, JsonNode> entry = itr.next();
    indent(bld, depth);
    bld.append('\"');
    bld.append(entry.getKey());
    bld.append('\"');
    bld.append(':');
    newLine = toString(bld, entry.getValue(), depth + 1, false);
    if (newLine) {
        indent(bld, depth);
        newLine = false;
if (node.size() > 0) {
    bld.append('\n');
    newLine = true;
if (newLine) {
    indent(bld, depth);
    newLine = false;
bld.append('}');
return false;
JsonNodeobjToJson(Object obj)
Converts a generic Java object to a JsoNode object 
return mapper.valueToTree(obj);
StringtoJson(List list)
to Json 
try {
    return new ObjectMapper().writeValueAsString(list);
} catch (JsonProcessingException e) {
    e.printStackTrace();
return "";
StringtoJson(Object dto)
to Json 
ObjectMapper mapper = createObjectMapper();
return mapper.writeValueAsString(dto);
StringtoJson(Object message)
to Json 
return mapper.writeValueAsString(message);
StringtoJson(Object o)
to Json 
try {
    return getObjectMapper().writeValueAsString(o);
} catch (Exception e) {
    e.printStackTrace();
    return "<exception>";
StringtoJson(Object o)
to Json 
return JSON_MAPPER.writeValueAsString(o);
StringtoJSON(Object obj)
to JSON 
try {
    ObjectMapper objectMapper = new ObjectMapper();
    objectMapper.configure(SerializationFeature.WRITE_NULL_MAP_VALUES, false);
    objectMapper.setSerializationInclusion(JsonInclude.Include.NON_NULL);
    return objectMapper.writeValueAsString(obj);
} catch (JsonProcessingException e) {
    e.printStackTrace();
    return "{error: " + e.getMessage() + "}";
...