test.java

ext-demo,ext简单示例

package org.json.me.test;

import java.util.Enumeration;
import java.util.Hashtable;
import java.util.Vector;
import java.io.StringWriter;

import org.json.me.*;

/**
 * Test class. This file is not formally a member of the org.json library.
 * It is just a casual test tool.
 */
public class Test {

    /**
     * Entry point.
     * @param args
     */
    public static void main(String args[]) {
        Enumeration it;
        JSONArray a;
        JSONObject j;
        JSONStringer jj;
        String s;
        
// Obj is a typical class that implements JSONString.        

        class Obj implements JSONString {
        	public String aString;
        	public double aNumber;
        	public boolean aBoolean;
        	
            public Obj(String string, double n, boolean b) {
                this.aString = string;
                this.aNumber = n;
                this.aBoolean = b;
            }
            
            public String toJSONString() {
            	return "{" + JSONObject.quote(this.aString) + ":" + 
            	JSONObject.doubleToString(this.aNumber) + "}";
            }            
            public String toString() {
            	return this.aString + " " + this.aNumber + " " + this.aBoolean;
            }
        }      
        
        
        try {     	
        	String sa[] = {"aString", "aNumber", "aBoolean"};
        	Obj obj = new Obj("A string, a number, and a boolean", 42, true);
            
            jj = new JSONStringer();
            s = jj.object()
                .key("foo")
                .value("bar")
                .key("baz")
                .array()
                    .object()
                        .key("quux")
                        .value("Thanks, Josh!")
                    .endObject()
                .endArray()
                .endObject()
                .toString();
            System.out.println(s);

            System.out.println(new JSONStringer()
                .object()
                .key("a")
                .array()
                .array()
                .array()
                .value("b")
                .endArray()
                .endArray()
                .endArray()
                .endObject()
                .toString());

            jj = new JSONStringer();
            jj.array();
            jj.value(1);
            jj.array();
            jj.value(null);
            jj.array();
            jj.object();
            jj.key("empty-array").array().endArray();
            jj.key("answer").value(42);
            jj.key("null").value(null);
            jj.key("false").value(false);
            jj.key("true").value(true);
            jj.key("big").value(123456789e+88);
            jj.key("small").value(123456789e-88);
            jj.key("empty-object").object().endObject();
            jj.key("long");
            jj.value(9223372036854775807L);
            jj.endObject();
            jj.value("two");
            jj.endArray();
            jj.value(true);
            jj.endArray();
            jj.value(98.6);
            jj.value(-100.0);
            jj.object();
            jj.endObject();
            jj.object();
            jj.key("one");
            jj.value(1.00);
            jj.endObject();
            jj.value(obj);
            jj.endArray();
            System.out.println(jj.toString());

            System.out.println(new JSONArray(jj.toString()).toString(4));
            System.out.println("");

            j = new JSONObject("{slashes: '///', closetag: '</script>', backslash:'\\\\', ei: {quotes: '\"\\''},eo: {a: '\"quoted\"', b:\"don't\"}, quotes: [\"'\", '\"']}");
            System.out.println(j.toString(2));
            System.out.println("");

            j = new JSONObject(
                "/*comment*/{foo: [true, false,9876543210,    0.0, 1.00000001,  1.000000000001, 1.00000000000000001," +
                " .00000000000000001, 2.00, 0.1, 2e100, -32,[],{}, \"string\"], " +
                "  to   : null, op : 'Good'," +
                "ten:10} postfix comment");
            j.put("String", "98.6");
            j.put("JSONObject", new JSONObject());
            j.put("JSONArray", new JSONArray());
            j.put("int", 57);
            j.put("double", 123456789012345678901234567890.);
            j.put("true", true);
            j.put("false", false);
            j.put("null", JSONObject.NULL);
            j.put("bool", "true");
            j.put("zero", -0.0);
            a = j.getJSONArray("foo");
            a.put(666);
            a.put(2001.99);
            a.put("so \"fine\".");
            a.put("so <fine>.");
            a.put(true);
            a.put(false);
            a.put(new JSONArray());
            a.put(new JSONObject());
            System.out.println(j.toString(4));
            System.out.println("");

            System.out.println("String: " + j.getDouble("String"));
            System.out.println("  bool: " + j.getBoolean("bool"));
            System.out.println("    to: " + j.getString("to"));
            System.out.println("  true: " + j.getString("true"));
            System.out.println("   foo: " + j.getJSONArray("foo"));
            System.out.println("    op: " + j.getString("op"));
            System.out.println("   ten: " + j.getInt("ten"));
            System.out.println("  oops: " + j.optBoolean("oops"));
            System.out.println("");

            JSONTokener jt = new JSONTokener("{op:'test', to:'session', pre:1}{op:'test', to:'session', pre:2}");
            j = new JSONObject(jt);
            System.out.println(j.toString());
            System.out.println("pre: " + j.optInt("pre"));
            int i = jt.skipTo('{');
            System.out.println(i);
            j = new JSONObject(jt);
            System.out.println(j.toString());
            System.out.println("");

            a = new JSONArray(" [\"<escape>\", next is an implied null , , ok,] ");
            System.out.println(a.toString());
            System.out.println("");

            j = new JSONObject("{ fun => with non-standard forms ; forgiving => This package can be used to parse formats that are similar to but not stricting conforming to JSON; why=To make it easier to migrate existing data to JSON,one = [[1.00]]; uno=[[{1=>1}]];'+':+6e66 ;pluses=+++;empty = '' , 'double':0.666,true: TRUE, false: FALSE, null=NULL;[true] = [[!,@;*]]; string=>  o. k. ; # comment\r oct=0666; hex=0x666; dec=666; o=0999; noh=0x0x}");
            System.out.println(j.toString(4));
            System.out.println("");
            if (j.getBoolean("true") && !j.getBoolean("false")) {
                System.out.println("It's all good");
            }

            System.out.println("");
            j = new JSONObject(j, new String[]{"dec", "oct", "hex", "missing"});
            System.out.println(j.toString(4));

            System.out.println("");
            System.out.println(new JSONStringer().array().value(a).value(j).endArray());

            j = new JSONObject("{string: \"98.6\", long: 2147483648, int: 2147483647, longer: 9223372036854775807, double: 9223372036854775808}");
            System.out.println(j.toString(4));

            System.out.println("\ngetInt");
            System.out.println("int    " + j.getInt("int"));
            System.out.println("long   " + j.getInt("long"));
            System.out.println("longer " + j.getInt("longer"));
            System.out.println("double " + j.getInt("double"));
            System.out.println("string " + j.getInt("string"));

            System.out.println("\ngetLong");
            System.out.println("int    " + j.getLong("int"));
            System.out.println("long   " + j.getLong("long"));
            System.out.println("longer " + j.getLong("longer"));
            System.out.println("double " + j.getLong("double"));
            System.out.println("string " + j.getLong("string"));

            System.out.println("\ngetDouble");
            System.out.println("int    " + j.getDouble("int"));
            System.out.println("long   " + j.getDouble("long"));
            System.out.println("longer " + j.getDouble("longer"));
            System.out.println("double " + j.getDouble("double"));
            System.out.println("string " + j.getDouble("string"));

            j.put("good sized", 9223372036854775807L);
            System.out.println(j.toString(4));

            a = new JSONArray("[2147483647, 2147483648, 9223372036854775807, 9223372036854775808]");
            System.out.println(a.toString(4));

            System.out.println("\nKeys: ");
            it = j.keys();
            while (it.hasMoreElements()) {
                s = (String)it.nextElement();
                System.out.println(s + ": " + j.getString(s));
            }


            System.out.println("\naccumulate: ");
            j = new JSONObject();
            j.accumulate("stooge", "Curly");
            j.accumulate("stooge", "Larry");
            j.accumulate("stooge", "Moe");
            a = j.getJSONArray("stooge");
            a.put(5, "Shemp");
            System.out.println(j.toString(4));

            System.out.println("\nwrite:");
            System.out.println(j.write(new StringWriter()));
            System.out.println("");

            Vector c = null;
            Hashtable m = null;
            
            j = new JSONObject(m);
            a = new JSONArray(c);
            j.append("stooge", "Joe DeRita");
            j.put("map", m);
            j.put("collection", c);
            j.put("array", a);
            a.put(m);
            a.put(c);
            System.out.println(j.toString(4));
            
            System.out.println("\nTesting Exceptions: ");

            System.out.print("Exception: ");
            try {
                System.out.println(j.getDouble("stooge"));
            } catch (Exception e) {
                System.out.println(e);
            }
            System.out.print("Exception: ");
            try {
                System.out.println(j.getDouble("howard"));
            } catch (Exception e) {
                System.out.println(e);
            }
            System.out.print("Exception: ");
            try {
                System.out.println(j.put(null, "howard"));
            } catch (Exception e) {
                System.out.println(e);
            }
            System.out.print("Exception: ");
            try {
                System.out.println(a.getDouble(0));
            } catch (Exception e) {
                System.out.println(e);
            }
            System.out.print("Exception: ");
            try {
                System.out.println(a.get(-1));
            } catch (Exception e) {
                System.out.println(e);
            }
            System.out.print("Exception: ");
            try {
                System.out.println(a.put(Double.NaN));
            } catch (Exception e) {
                System.out.println(e);
            }
        } catch (Exception e) {
            System.out.println(e.toString());
        }
    }
}