Java Path File Read nio readJson(Class dataClass, Path path)

Description

Reads the data from a JSON file at the given path

License

Apache License

Parameter

Parameter	Description
path	the path to read the JSON data from

Return

the parsed JSON data

Declaration

public static <T> T readJson(Class<T> dataClass, Path path)
        throws IOException 

Method Source Code

//package com.java2s;
/*/*w ww. j  a v  a 2 s . c o m*/
 * Copyright 2016 Danish Maritime Authority.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *       http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import com.fasterxml.jackson.core.type.TypeReference;
import com.fasterxml.jackson.databind.ObjectMapper;
import java.io.IOException;
import java.nio.file.Path;

public class Main {
    /**
     * Reads the data from a JSON file at the given path
     *
     * @param path the path to read the JSON data from
     * @return the parsed JSON data
     */
    public static <T> T readJson(Class<T> dataClass, Path path)
            throws IOException {

        if (path == null) {
            return null;
        }

        ObjectMapper jsonMapper = new ObjectMapper();
        return jsonMapper.readValue(path.toFile(), dataClass);
    }

    /**
     * Reads the data from a JSON file at the given path
     *
     * @param typeRef the type reference
     * @param path the path to read the JSON data from
     * @return the parsed JSON data
     */
    public static <T> T readJson(TypeReference typeRef, Path path)
            throws IOException {

        if (path == null) {
            return null;
        }

        ObjectMapper jsonMapper = new ObjectMapper();
        return jsonMapper.readValue(path.toFile(), typeRef);
    }
}

Related

1. readFromFile(Path absolutePath)
2. readFromFile(String path)
3. readFromFile(String path)
4. readFully(Path filePath)
5. readIntsFromFile(String filePath)
6. readJsonObject(Path path, TypeReference typeReference)
7. readKeyFile(String path)
8. readLine(BufferedReader br, Path path)
9. readLineByLine(String filePath)