使用add属性将JSONObject添加到JSONArray java

Question

This is my servlet code. I want add my json object values into a json array.I used add method for that but I'm getting an error. How to add that object to my array? Is there any mistake in my code?

@Override
protected void doPost(HttpServletRequest req, HttpServletResponse resp) 
     throws ServletException, IOException {

    try {
        Session ses = HibernateSession.getSession();
        Criteria cr1 = HibernateSession.createCriteria(ses, Product.class);
        cr1.add(Restrictions.eq("Status", "Active"));
        List<Product> plist = cr1.list();

        JSONArray ja1 = new JSONArray();
        for (Product product : plist) {
            JSONObject jo1 = new JSONObject();
            jo1.put("image", product.getProductImages());
            jo1.put("name", product.getName());
            jo1.put("price", product.getPrice());

            ja1.add(jo1);
        }

    } catch (Exception e) {
        e.printStackTrace();
    }
}

Answer 1

尝试使用put()而不是add() ;）

Answer 2

This depends on the libraries which you are using.

If you are using org.json.JSONArray then it should be put() but if you are using org.json.simple.JSONArray it's add() .

---

I bet you are using org.json.JSONArray . So try,

ja1.put(jo1);